{"product_id":"investment-calculator","title":"Investment Calculator","description":"\u003cstyle\u003e\n.ic-calculator {\n  --ink: #0f172a;\n  --muted: #475569;\n  --border: #e2e8f0;\n  --surface: #ffffff;\n  --tint: #f8fafc;\n  --primary: #1d4ed8;\n  --accent: #c2410c;\n  --accent-hover: #9a3412;\n  --chart-1: #1e40af;\n  --chart-2: #0d9488;\n  --chart-3: #7c3aed;\n  --chart-4: #be185d;\n  --chart-5: #334155;\n  color: var(--ink);\n  background: var(--tint);\n  border: 1px solid var(--border);\n  border-radius: 8px;\n  padding: 24px;\n  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, \"Segoe UI\", sans-serif;\n  font-size: 15px;\n  line-height: 1.55;\n  max-width: 1200px;\n  margin: 0 auto;\n  box-shadow: 0 1px 2px rgba(15,23,42,.06);\n  container-type: inline-size;\n}\n.ic-calculator, .ic-calculator *, .ic-calculator *::before, .ic-calculator *::after { box-sizing: border-box; }\n.ic-calculator * { min-width: 0; }\n.ic-calculator h2, .ic-calculator h3, .ic-calculator p { margin-top: 0; }\n.ic-calculator h2 { font-size: 24px; line-height: 1.25; font-weight: 700; margin-bottom: 8px; }\n.ic-calculator h3 { font-size: 18px; line-height: 1.35; font-weight: 650; margin-bottom: 12px; }\n.ic-calculator a { color: var(--primary); text-underline-offset: 2px; }\n.ic-header { display: grid; gap: 16px; margin-bottom: 16px; }\n.ic-subtitle { color: var(--muted); margin-bottom: 0; max-width: 760px; }\n.ic-pills { display: flex; flex-wrap: wrap; gap: 8px; }\n.ic-pill { display: inline-flex; align-items: center; gap: 8px; padding: 6px 10px; background: var(--surface); border: 1px solid var(--border); border-radius: 999px; color: var(--muted); font-size: 13px; font-weight: 500; }\n.ic-pill strong { color: var(--ink); font-variant-numeric: tabular-nums; }\n.ic-toolbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 16px; }\n.ic-button { appearance: none; border: 1px solid var(--border); border-radius: 6px; min-height: 44px; padding: 10px 16px; background: var(--surface); color: var(--ink); font: inherit; font-weight: 650; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; gap: 10px; box-shadow: 0 1px 2px rgba(15,23,42,.06); }\n.ic-button:hover { border-color: #cbd5e1; box-shadow: 0 2px 5px rgba(15,23,42,.10); }\n.ic-button:focus-visible, .ic-input:focus-visible, .ic-select:focus-visible, .ic-segment-input:focus-visible + .ic-segment-label { outline: 3px solid rgba(29,78,216,.35); outline-offset: 2px; }\n.ic-download { background: var(--accent); color: #fff; border-color: var(--accent); padding: 12px 18px; white-space: nowrap; }\n.ic-download:hover { background: var(--accent-hover); border-color: var(--accent-hover); }\n.ic-download svg { width: 18px; height: 18px; flex: 0 0 auto; }\n.ic-workspace { display: grid; grid-template-columns: minmax(0, 1fr); gap: 16px; align-items: start; }\n.ic-card { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 20px; box-shadow: 0 1px 2px rgba(15,23,42,.06); }\n.ic-card-heading { display: flex; align-items: baseline; flex-wrap: wrap; gap: 8px 12px; margin-bottom: 16px; }\n.ic-card-heading h3 { margin-bottom: 0; }\n.ic-card-heading p { margin-bottom: 0; color: var(--muted); font-size: 13px; font-weight: 500; }\n.ic-form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }\n.ic-field { display: flex; flex-direction: column; gap: 6px; }\n.ic-calculator fieldset.ic-field { border: 0; padding: 0; margin: 0; }\n.ic-field-full { grid-column: 1 \/ -1; }\n.ic-label, .ic-legend-title { font-size: 14px; font-weight: 600; color: var(--ink); }\n.ic-input, .ic-select { width: 100%; min-height: 44px; border: 1px solid #cbd5e1; border-radius: 6px; padding: 9px 12px; background: #fff; color: var(--ink); font: inherit; font-size: 15px; font-variant-numeric: tabular-nums; }\n.ic-input[disabled] { background: #f1f5f9; color: #64748b; cursor: not-allowed; }\n.ic-helper, .ic-error { min-height: 20px; margin: 0; font-size: 13px; font-weight: 500; color: var(--muted); }\n.ic-error { color: #b91c1c; }\n.ic-segmented { display: inline-grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4px; padding: 4px; border: 1px solid var(--border); background: var(--tint); border-radius: 6px; }\n.ic-segment-input { position: absolute; opacity: 0; pointer-events: none; }\n.ic-segment-label { display: flex; justify-content: center; align-items: center; min-height: 44px; padding: 6px 10px; border-radius: 4px; color: var(--muted); font-size: 13px; font-weight: 650; cursor: pointer; text-align: center; }\n.ic-segment-input:checked + .ic-segment-label { background: var(--surface); color: var(--primary); box-shadow: 0 1px 2px rgba(15,23,42,.10); }\n.ic-results { display: grid; gap: 16px; }\n.ic-primary-result { padding: 16px; border: 1px solid #bfdbfe; border-radius: 8px; background: #eff6ff; }\n.ic-primary-label { display: block; color: #1e3a8a; font-size: 13px; font-weight: 650; margin-bottom: 4px; }\n.ic-primary-value { display: block; color: #172554; font-size: 30px; line-height: 1.2; font-weight: 700; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }\n.ic-live { margin: 8px 0 0; color: #1e3a8a; font-size: 13px; font-weight: 500; }\n.ic-stat-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }\n.ic-stat { padding: 12px; border: 1px solid var(--border); border-radius: 6px; background: var(--tint); }\n.ic-stat-label { display: block; color: var(--muted); font-size: 13px; font-weight: 500; }\n.ic-stat-value { display: block; margin-top: 4px; font-size: 20px; line-height: 1.25; font-weight: 700; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }\n.ic-result-note { margin: 0; color: var(--muted); font-size: 13px; font-weight: 500; }\n.ic-section { margin-top: 16px; }\n.ic-chart-cluster { display: grid; grid-template-columns: minmax(220px, 320px) minmax(0, 420px); justify-content: center; align-items: end; gap: 24px; }\n.ic-chart-visual { display: grid; place-items: center; width: 100%; }\n.ic-donut-svg { display: block; width: min(100%, 320px); height: auto; }\n.ic-donut-center { font-size: 18px; font-weight: 700; fill: var(--ink); text-anchor: middle; font-variant-numeric: tabular-nums; }\n.ic-donut-center-label { font-size: 13px; font-weight: 500; fill: var(--muted); text-anchor: middle; }\n.ic-legend { display: grid; gap: 10px; align-content: center; }\n.ic-legend-row { display: grid; grid-template-columns: 12px minmax(100px, max-content) max-content max-content; align-items: center; gap: 8px 12px; font-size: 13px; font-weight: 500; }\n.ic-swatch { width: 12px; height: 12px; border-radius: 3px; }\n.ic-legend-name { color: var(--ink); }\n.ic-legend-amount, .ic-legend-percent { color: var(--muted); font-variant-numeric: tabular-nums; white-space: nowrap; }\n.ic-chart-callout, .ic-table-note { margin-top: 16px; padding: 10px 12px; border: 1px solid var(--border); border-radius: 6px; background: var(--tint); color: var(--muted); font-size: 13px; font-weight: 500; }\n.ic-empty { padding: 16px; border: 1px dashed #cbd5e1; border-radius: 6px; color: var(--muted); background: var(--tint); text-align: center; font-size: 13px; font-weight: 500; }\n.ic-line-wrap { display: grid; gap: 16px; }\n.ic-line-svg { width: 100%; height: auto; display: block; }\n.ic-line-legend { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px 20px; }\n.ic-line-legend-item { display: inline-grid; grid-template-columns: 12px max-content max-content; gap: 8px; align-items: center; font-size: 13px; font-weight: 500; }\n.ic-line-legend-item strong { font-variant-numeric: tabular-nums; }\n.ic-safe-stack .ic-chart-cluster { grid-template-columns: minmax(0, 1fr); gap: 16px; }\n.ic-safe-stack .ic-legend { justify-self: center; }\n.ic-safe-stack .ic-chart-callout { margin-top: 20px; }\n.ic-table-controls { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }\n.ic-table-toggle { min-height: 44px; padding: 7px 12px; }\n.ic-table-toggle[aria-pressed=\"true\"] { color: #fff; background: var(--primary); border-color: var(--primary); }\n.ic-table-wrap { width: 100%; overflow-x: auto; border: 1px solid var(--border); border-radius: 6px; background: var(--surface); }\n.ic-table { width: 100%; min-width: 660px; border-collapse: collapse; font-size: 13px; font-variant-numeric: tabular-nums; }\n.ic-table th, .ic-table td { padding: 10px 12px; border-bottom: 1px solid var(--border); text-align: right; white-space: nowrap; }\n.ic-table th:first-child, .ic-table td:first-child { text-align: left; }\n.ic-table thead th { color: #fff; background: var(--ink); font-weight: 650; }\n.ic-table tbody tr:last-child td { border-bottom: 0; }\n.ic-table tbody tr:nth-child(even) { background: var(--tint); }\n.ic-safe-table-stack .ic-table-wrap { height: auto; max-height: none; }\n.ic-safe-table-stack .ic-table-note { margin-top: 20px; }\n.ic-education { margin-top: 16px; }\n.ic-education-content { max-width: 900px; }\n.ic-education-content h3 { margin-top: 24px; }\n.ic-education-content p { color: #334155; }\n.ic-education-content ul { margin: 0 0 16px; padding-left: 22px; color: #334155; }\n.ic-education-content li + li { margin-top: 8px; }\n.ic-visually-hidden { position: absolute !important; width: 1px !important; height: 1px !important; padding: 0 !important; margin: -1px !important; overflow: hidden !important; clip: rect(0,0,0,0) !important; white-space: nowrap !important; border: 0 !important; }\n@container (min-width: 900px) {\n  .ic-workspace { grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr); }\n}\n@container (max-width: 639px) {\n  .ic-calculator { padding: 16px; }\n  .ic-card { padding: 16px; }\n  .ic-form-grid { grid-template-columns: minmax(0, 1fr); gap: 12px; }\n  .ic-field-full { grid-column: auto; }\n  .ic-chart-cluster { grid-template-columns: minmax(0, 1fr); gap: 16px; }\n  .ic-legend { justify-self: center; width: min(100%, 360px); }\n  .ic-legend-row { grid-template-columns: 12px minmax(90px, max-content) max-content; gap: 8px 10px; }\n  .ic-legend-percent { grid-column: 2 \/ -1; }\n  .ic-chart-callout, .ic-table-note { margin-top: 12px; }\n}\n@container (max-width: 420px) {\n  .ic-toolbar { align-items: stretch; }\n  .ic-button { flex: 1 1 auto; }\n  .ic-download { flex: 1 1 100%; }\n  .ic-stat-grid { grid-template-columns: minmax(0, 1fr); }\n  .ic-primary-value { font-size: 26px; }\n}\n\u003c\/style\u003e\n\u003cdiv class=\"ic-calculator\" data-calculator-root\u003e\n  \u003csection class=\"ic-header\"\u003e\n    \u003cdiv\u003e\n      \u003ch2\u003eInvestment Calculator\u003c\/h2\u003e\n      \u003cp class=\"ic-subtitle\"\u003eProject compound growth, solve for a target variable, inspect the accumulation schedule, and export the current scenario to a real Excel workbook.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"ic-pills\" aria-label=\"Live investment summary\"\u003e\n      \u003cspan class=\"ic-pill\"\u003eEnd balance \u003cstrong class=\"ic-pill-end\"\u003e—\u003c\/strong\u003e\u003c\/span\u003e\n      \u003cspan class=\"ic-pill\"\u003eInterest earned \u003cstrong class=\"ic-pill-interest\"\u003e—\u003c\/strong\u003e\u003c\/span\u003e\n      \u003cspan class=\"ic-pill\"\u003eHorizon \u003cstrong class=\"ic-pill-horizon\"\u003e—\u003c\/strong\u003e\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n  \u003cdiv class=\"ic-toolbar\"\u003e\n    \u003cbutton class=\"ic-button ic-download\" type=\"button\"\u003e\n      \u003csvg viewbox=\"0 0 24 24\" aria-hidden=\"true\"\u003e\u003cpath fill=\"currentColor\" d=\"M5 20h14v-2H5v2Zm7-18a1 1 0 0 0-1 1v9.59L8.71 10.3 7.3 11.71l4 4a1 1 0 0 0 1.4 0l4-4-1.41-1.41L13 12.59V3a1 1 0 0 0-1-1Z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n      \u003cspan\u003eDownload Excel\u003c\/span\u003e\n    \u003c\/button\u003e\n    \u003cbutton class=\"ic-button ic-reset\" type=\"button\"\u003eReset\u003c\/button\u003e\n  \u003c\/div\u003e\n  \u003csection class=\"ic-workspace\"\u003e\n    \u003cdiv class=\"ic-card ic-input-card\"\u003e\n      \u003cdiv class=\"ic-card-heading\"\u003e\n        \u003ch3\u003eInvestment assumptions\u003c\/h3\u003e\n        \u003cp\u003eResults update as you type.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ic-form-grid\"\u003e\n        \u003cdiv class=\"ic-field ic-field-full\"\u003e\n          \u003clabel class=\"ic-label\" for=\"ic-mode\"\u003eCalculate\u003c\/label\u003e\n          \u003cselect class=\"ic-select\" id=\"ic-mode\"\u003e\n            \u003coption value=\"end\"\u003eEnd amount\u003c\/option\u003e\n            \u003coption value=\"contribution\"\u003eContribution amount\u003c\/option\u003e\n            \u003coption value=\"rate\"\u003eReturn rate\u003c\/option\u003e\n            \u003coption value=\"starting\"\u003eStarting amount\u003c\/option\u003e\n            \u003coption value=\"length\"\u003eInvestment length\u003c\/option\u003e\n          \u003c\/select\u003e\n          \u003cp class=\"ic-helper\"\u003eChoose the unknown variable. Its input is disabled and becomes the primary result.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"ic-field ic-target-field\"\u003e\n          \u003clabel class=\"ic-label\" for=\"ic-target\"\u003eTarget amount\u003c\/label\u003e\n          \u003cinput class=\"ic-input\" id=\"ic-target\" type=\"text\" inputmode=\"decimal\" value=\"$250,000.00\"\u003e\n          \u003cp class=\"ic-helper\"\u003eRequired for all target-solving modes.\u003c\/p\u003e\n          \u003cp class=\"ic-error ic-target-error\" aria-live=\"polite\"\u003e\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"ic-field\"\u003e\n          \u003clabel class=\"ic-label\" for=\"ic-starting\"\u003eStarting amount\u003c\/label\u003e\n          \u003cinput class=\"ic-input\" id=\"ic-starting\" type=\"text\" inputmode=\"decimal\" value=\"$20,000.00\"\u003e\n          \u003cp class=\"ic-helper\"\u003eMoney invested at the beginning.\u003c\/p\u003e\n          \u003cp class=\"ic-error ic-starting-error\" aria-live=\"polite\"\u003e\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"ic-field\"\u003e\n          \u003clabel class=\"ic-label\" for=\"ic-years\"\u003eInvestment length\u003c\/label\u003e\n          \u003cinput class=\"ic-input\" id=\"ic-years\" type=\"text\" inputmode=\"decimal\" value=\"10\"\u003e\n          \u003cp class=\"ic-helper\"\u003eYears; fractional values are allowed.\u003c\/p\u003e\n          \u003cp class=\"ic-error ic-years-error\" aria-live=\"polite\"\u003e\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"ic-field\"\u003e\n          \u003clabel class=\"ic-label\" for=\"ic-rate\"\u003eAnnual return rate\u003c\/label\u003e\n          \u003cinput class=\"ic-input\" id=\"ic-rate\" type=\"text\" inputmode=\"decimal\" value=\"6.00%\"\u003e\n          \u003cp class=\"ic-helper\"\u003eNominal annual rate before taxes and fees.\u003c\/p\u003e\n          \u003cp class=\"ic-error ic-rate-error\" aria-live=\"polite\"\u003e\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"ic-field\"\u003e\n          \u003clabel class=\"ic-label\" for=\"ic-compounding\"\u003eCompounding frequency\u003c\/label\u003e\n          \u003cselect class=\"ic-select\" id=\"ic-compounding\"\u003e\n            \u003coption value=\"1\"\u003eAnnually\u003c\/option\u003e\n            \u003coption value=\"2\"\u003eSemiannually\u003c\/option\u003e\n            \u003coption value=\"4\"\u003eQuarterly\u003c\/option\u003e\n            \u003coption value=\"12\"\u003eMonthly\u003c\/option\u003e\n            \u003coption value=\"24\"\u003eSemimonthly\u003c\/option\u003e\n            \u003coption value=\"26\"\u003eBiweekly\u003c\/option\u003e\n            \u003coption value=\"52\"\u003eWeekly\u003c\/option\u003e\n            \u003coption value=\"365\"\u003eDaily\u003c\/option\u003e\n            \u003coption value=\"continuous\"\u003eContinuously\u003c\/option\u003e\n          \u003c\/select\u003e\n          \u003cp class=\"ic-helper\"\u003eControls how the annual rate converts into monthly growth.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"ic-field\"\u003e\n          \u003clabel class=\"ic-label\" for=\"ic-contribution\"\u003eAdditional contribution\u003c\/label\u003e\n          \u003cinput class=\"ic-input\" id=\"ic-contribution\" type=\"text\" inputmode=\"decimal\" value=\"$1,000.00\"\u003e\n          \u003cp class=\"ic-helper\"\u003eRecurring deposit, separate from the starting amount.\u003c\/p\u003e\n          \u003cp class=\"ic-error ic-contribution-error\" aria-live=\"polite\"\u003e\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"ic-field\"\u003e\n          \u003clabel class=\"ic-label\" for=\"ic-frequency\"\u003eContribution frequency\u003c\/label\u003e\n          \u003cselect class=\"ic-select\" id=\"ic-frequency\"\u003e\n            \u003coption value=\"monthly\"\u003eMonthly\u003c\/option\u003e\n            \u003coption value=\"yearly\"\u003eYearly\u003c\/option\u003e\n          \u003c\/select\u003e\n          \u003cp class=\"ic-helper\"\u003eMonthly deposits occur every month; yearly deposits occur once per year.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cfieldset class=\"ic-field ic-field-full\"\u003e\n          \u003clegend class=\"ic-legend-title\"\u003eContribution timing\u003c\/legend\u003e\n          \u003cdiv class=\"ic-segmented\"\u003e\n            \u003cinput class=\"ic-segment-input\" id=\"ic-timing-begin\" type=\"radio\" name=\"ic-timing\" value=\"begin\"\u003e\n            \u003clabel class=\"ic-segment-label\" for=\"ic-timing-begin\"\u003eBeginning of period\u003c\/label\u003e\n            \u003cinput class=\"ic-segment-input\" id=\"ic-timing-end\" type=\"radio\" name=\"ic-timing\" value=\"end\" checked\u003e\n            \u003clabel class=\"ic-segment-label\" for=\"ic-timing-end\"\u003eEnd of period\u003c\/label\u003e\n          \u003c\/div\u003e\n          \u003cp class=\"ic-helper\"\u003eBeginning deposits earn growth in the same period; end deposits start earning in the next period.\u003c\/p\u003e\n        \u003c\/fieldset\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"ic-card ic-results-card\"\u003e\n      \u003cdiv class=\"ic-card-heading\"\u003e\n        \u003ch3\u003eLive results\u003c\/h3\u003e\n        \u003cp class=\"ic-result-status\"\u003eCurrent scenario\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"ic-results\"\u003e\n        \u003cdiv class=\"ic-primary-result\"\u003e\n          \u003cspan class=\"ic-primary-label\"\u003eEnd balance\u003c\/span\u003e\n          \u003cstrong class=\"ic-primary-value\"\u003e—\u003c\/strong\u003e\n          \u003cp class=\"ic-live\" aria-live=\"polite\"\u003eEnter valid assumptions to calculate.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"ic-stat-grid\"\u003e\n          \u003cdiv class=\"ic-stat\"\u003e\n\u003cspan class=\"ic-stat-label\"\u003eStarting amount\u003c\/span\u003e\u003cstrong class=\"ic-stat-value ic-stat-start\"\u003e—\u003c\/strong\u003e\n\u003c\/div\u003e\n          \u003cdiv class=\"ic-stat\"\u003e\n\u003cspan class=\"ic-stat-label\"\u003eTotal contributions\u003c\/span\u003e\u003cstrong class=\"ic-stat-value ic-stat-contributions\"\u003e—\u003c\/strong\u003e\n\u003c\/div\u003e\n          \u003cdiv class=\"ic-stat\"\u003e\n\u003cspan class=\"ic-stat-label\"\u003eTotal interest\u003c\/span\u003e\u003cstrong class=\"ic-stat-value ic-stat-interest\"\u003e—\u003c\/strong\u003e\n\u003c\/div\u003e\n          \u003cdiv class=\"ic-stat\"\u003e\n\u003cspan class=\"ic-stat-label\"\u003eEffective annual yield\u003c\/span\u003e\u003cstrong class=\"ic-stat-value ic-stat-yield\"\u003e—\u003c\/strong\u003e\n\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cp class=\"ic-result-note\"\u003eThis is a deterministic projection. Actual investment returns vary and may include taxes, fees, volatility, and losses not modeled here.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n  \u003csection class=\"ic-card ic-section ic-breakdown-card\" data-chart-card\u003e\n    \u003cdiv class=\"ic-card-heading\"\u003e\n      \u003ch3\u003eEnding balance breakdown\u003c\/h3\u003e\n      \u003cp class=\"ic-breakdown-intro\"\u003eHow much of the projected balance comes from principal, recurring deposits, and growth.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"ic-breakdown-content\"\u003e\u003c\/div\u003e\n  \u003c\/section\u003e\n  \u003csection class=\"ic-card ic-section ic-growth-card\" data-chart-card\u003e\n    \u003cdiv class=\"ic-card-heading\"\u003e\n      \u003ch3\u003eGrowth over time\u003c\/h3\u003e\n      \u003cp class=\"ic-growth-intro\"\u003eProjected balance compared with cumulative money invested.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"ic-growth-content\"\u003e\u003c\/div\u003e\n  \u003c\/section\u003e\n  \u003csection class=\"ic-card ic-section ic-table-card\" data-table-card\u003e\n    \u003cdiv class=\"ic-card-heading\"\u003e\n      \u003ch3\u003eAccumulation schedule\u003c\/h3\u003e\n      \u003cp\u003eDeposits, interest, and ending balance for each period.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"ic-table-controls\" aria-label=\"Schedule detail\"\u003e\n      \u003cbutton class=\"ic-button ic-table-toggle ic-annual-toggle\" type=\"button\" aria-pressed=\"true\"\u003eAnnual\u003c\/button\u003e\n      \u003cbutton class=\"ic-button ic-table-toggle ic-monthly-toggle\" type=\"button\" aria-pressed=\"false\"\u003eMonthly\u003c\/button\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"ic-table-wrap\"\u003e\n      \u003ctable class=\"ic-table\"\u003e\n        \u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\" class=\"ic-period-head\"\u003eYear\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eDeposit\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eInterest\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eCumulative invested\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eEnding balance\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n        \u003ctbody class=\"ic-table-body\"\u003e\u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"ic-table-note\"\u003eThe schedule uses the same assumptions and full-precision model as the headline results, charts, and Excel export. Displayed values are rounded to cents.\u003c\/div\u003e\n  \u003c\/section\u003e\n  \u003csection class=\"ic-card ic-education\"\u003e\n    \u003cdiv class=\"ic-education-content\"\u003e\n      \u003ch2\u003eHow to use this investment calculator\u003c\/h2\u003e\n      \u003cp\u003eThis calculator estimates how a lump sum and recurring contributions may grow at a fixed rate of return. It can also work backward from a target. Use the \u003cstrong\u003eCalculate\u003c\/strong\u003e selector to choose the unknown: end amount, required recurring contribution, required return rate, required starting amount, or investment length. The model assumes a constant rate and regular deposits, so it is best treated as a planning baseline rather than a forecast of market performance.\u003c\/p\u003e\n\n      \u003ch3\u003eUnderstanding every input\u003c\/h3\u003e\n      \u003cp\u003e\u003cstrong\u003eTarget amount\u003c\/strong\u003e is the future balance you want to reach. It is required when solving for contribution, return rate, starting amount, or length. Use a positive dollar value. A higher target increases the required savings, return, starting capital, or time. A common mistake is entering a target in today’s purchasing power without considering inflation.\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eStarting amount\u003c\/strong\u003e is the money available at time zero. It is required unless the calculator is solving for it. A larger starting amount has more time to compound and generally reduces the contribution or return needed for the same target. Do not include future deposits here.\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eInvestment length\u003c\/strong\u003e is the horizon in years. Fractional years are accepted and converted into monthly periods. Longer horizons generally increase compound growth, but a longer real-world horizon also exposes the plan to more uncertainty. When solving for length, the calculator reports the first monthly period in which the target is reached.\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eAnnual return rate\u003c\/strong\u003e is the assumed nominal yearly return. Enter 6 for 6%. The rate may be positive, zero, or moderately negative when solving scenarios. Higher rates increase ending value and interest, but historical averages are not guaranteed. The U.S. Securities and Exchange Commission explains the relationship between risk and return in its \u003ca href=\"https:\/\/www.investor.gov\/introduction-investing\/investing-basics\/what-risk\" target=\"_blank\" rel=\"noopener noreferrer\"\u003einvestor education material\u003c\/a\u003e.\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eCompounding frequency\u003c\/strong\u003e determines how often the nominal annual rate is credited. More frequent compounding usually raises the effective annual yield slightly when the nominal rate is positive. Continuous compounding uses the exponential growth convention. Keep this assumption consistent with the product or model you are evaluating.\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eAdditional contribution\u003c\/strong\u003e is the recurring deposit. It is required unless the calculator is solving for it. The \u003cstrong\u003econtribution frequency\u003c\/strong\u003e specifies monthly or yearly deposits. The \u003cstrong\u003etiming\u003c\/strong\u003e control determines whether each deposit earns a return during the same period. Beginning-of-period deposits compound sooner and therefore produce a higher ending balance than identical end-of-period deposits.\u003c\/p\u003e\n\n      \u003ch3\u003eInterpreting the results\u003c\/h3\u003e\n      \u003cp\u003e\u003cstrong\u003eEnd balance\u003c\/strong\u003e is the projected account value after the final period. In other solve modes, the primary result changes to the required contribution, return rate, starting amount, or time, while the model still displays the resulting end balance. A zero end balance means the inputs provide no remaining value; a negative economic outcome may appear as negative interest even when the balance itself remains nonnegative.\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eTotal contributions\u003c\/strong\u003e is the sum of recurring deposits only. \u003cstrong\u003eStarting amount\u003c\/strong\u003e is shown separately so you can distinguish initial capital from later savings. \u003cstrong\u003eTotal interest\u003c\/strong\u003e equals ending balance minus starting amount minus all contributions. Positive interest indicates modeled growth; zero means the account only contains deposited money; negative interest means the assumed return reduced capital.\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eEffective annual yield\u003c\/strong\u003e converts the selected nominal rate and compounding frequency into a comparable annual growth rate. It is not an after-tax or after-fee return. For cash products, compare assumptions with the institution’s disclosed annual percentage yield. The Federal Deposit Insurance Corporation provides background on \u003ca href=\"https:\/\/www.fdic.gov\/resources\/deposit-insurance\/\" target=\"_blank\" rel=\"noopener noreferrer\"\u003edeposit insurance\u003c\/a\u003e, while the U.S. Treasury publishes information about \u003ca href=\"https:\/\/www.treasurydirect.gov\/marketable-securities\/tips\/\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eTreasury Inflation-Protected Securities\u003c\/a\u003e.\u003c\/p\u003e\n\n      \u003ch3\u003eReading the charts and schedule\u003c\/h3\u003e\n      \u003cp\u003eThe breakdown chart separates the ending balance into starting capital, recurring contributions, and investment growth. It is drawn only when all represented components are nonnegative and the total is meaningful. The growth chart compares projected balance with cumulative invested capital at annual checkpoints. A widening gap indicates compounding contributes a larger share of the balance.\u003c\/p\u003e\n      \u003cp\u003eThe accumulation schedule shows the deposit made during each period, interest earned in that period, cumulative invested capital, and ending balance. Switch between annual and monthly detail. The annual view aggregates monthly rows, while the monthly view exposes contribution timing and the first and final periods. The final schedule row cross-foots to the headline ending balance.\u003c\/p\u003e\n\n      \u003ch3\u003eFormula approach, tradeoffs, and common mistakes\u003c\/h3\u003e\n      \u003cp\u003eThe model converts the nominal annual rate into a monthly growth factor based on the selected compounding frequency. Each month it applies beginning deposits, growth, and end deposits in the selected order. Target-solving modes use the same cash-flow engine and solve the unknown by direct scaling or bounded numerical search. This keeps the results, charts, table, accessibility summary, and workbook aligned.\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003eAvoid treating a smooth fixed return as a promise. Market returns are volatile and sequence risk can materially change outcomes.\u003c\/li\u003e\n        \u003cli\u003eDo not mix nominal and inflation-adjusted values. The U.S. Bureau of Labor Statistics publishes the \u003ca href=\"https:\/\/www.bls.gov\/cpi\/\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eConsumer Price Index\u003c\/a\u003e, which can help frame purchasing-power assumptions.\u003c\/li\u003e\n        \u003cli\u003eRemember fees and taxes. Even small annual costs can compound into a meaningful reduction over long horizons.\u003c\/li\u003e\n        \u003cli\u003eCheck contribution timing. Beginning-of-period and end-of-period deposits are not equivalent.\u003c\/li\u003e\n        \u003cli\u003eStress-test conservative and optimistic rates rather than relying on a single estimate.\u003c\/li\u003e\n      \u003c\/ul\u003e\n      \u003cp\u003eThe Excel export captures the current scenario, including solved values, inputs, breakdown, full schedule, and methodology notes. It is intended for analysis and documentation, not personalized investment advice.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\u003c\/div\u003e","brand":"FinancialModelsLab","offers":[{"title":"Default Title","offer_id":49909482324211,"sku":"investment-calculator","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0522\/6191\/2762\/files\/investment-calculator.webp?v=1783935407","url":"https:\/\/financialmodelslab.com\/products\/investment-calculator","provider":"Financial Models Lab","version":"1.0","type":"link"}