How to Calculate Monthly Running Costs for a Payment Processing Platform
Payment Processing Bundle
Payment Processing Running Costs
Expect initial monthly running costs for a Payment Processing service to hover near $76,000 in 2026, excluding transaction-based variable costs This figure includes $13,500 in fixed overhead (rent, cloud, software) and approximately $62,500 in annualized payroll for the initial 65 FTE team The largest recurring expense is payroll, representing over 80% of the fixed base Your total annual burn rate (EBITDA) is projected at $903,000 in the first year This guide breaks down the seven core operational expenses you must track, from third-party gateway fees (70% of volume) to necessary security compliance software You must plan for 31 months until the projected break-even date in July 2028
7 Operational Expenses to Run Payment Processing
#
Operating Expense
Expense Category
Description
Min Monthly Amount
Max Monthly Amount
1
Gateway Fees
Variable Cost
This variable cost is 70% of transaction volume in 2026, requiring constant negotiation as volume scales.
$0
$0
2
Fraud Software
Risk Management
Budget 15% of gross transaction value in 2026 for specialized software licenses essential for compliance and risk management.
$0
$0
3
Staff Wages
Personnel
The 2026 payroll averages $62,500 monthly, covering 55 full-time equivalents (FTEs) plus the fractional Sales Manager role starting mid-year.
$62,500
$62,500
4
Cloud Infrastructure
Technology
Allocate $3,000 monthly for robust cloud hosting and infrastructure to handle transaction volume and maintain uptime reliability.
$3,000
$3,000
5
Digital Marketing
Sales & Acquisition
Variable marketing costs are projected at 80% of revenue in 2026, separate from the fixed annual budget of $250,000 for seller acquisition.
$20,833
$20,833
6
Office Rent
Overhead
Fixed monthly office rent is $5,000, representing a non-negotiable overhead expense regardless of transaction volume.
$5,000
$5,000
7
Security/Legal
G&A/Legal
Mandatory compliance software costs $1,500 monthly, plus $2,000 for ongoing legal and accounting services, totaling $3,500.
$3,500
$3,500
Total
All Operating Expenses
All Operating Expenses
$94,833
$94,833
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What is the total required running budget for the first 12 months of operation?
Your total required running budget for the first 12 months is defined by covering the projected $903,000 EBITDA loss, plus funding all fixed overhead and variable costs, which are estimated at 185% of your generated volume. Before diving into this burn rate, you need a clear picture of How Is The Growth Of Payment Processing Volume Impacting The Success Of Your Business?
Fixed Costs & Buffer Need
You must calculate total fixed overhead monthly to know the baseline spend.
The required cash buffer must defintely cover the full $903,000 projected Year 1 EBITDA shortfall.
If your fixed overhead is $40,000 per month, that’s $480,000 in annual fixed spend alone.
The total budget is Fixed Costs + Variable Costs + $903k buffer.
Variable Cost Pressure
Variable costs are set extremely high at 185% of sales volume.
This means for every dollar of revenue, you incur $1.85 in direct costs.
This cost structure guarantees negative gross margins on every transaction.
You need an immediate, massive shift in pricing or cost structure to survive volume growth.
Which recurring cost categories will consume the largest percentage of revenue?
The largest recurring costs for this Payment Processing platform will be the transaction-based expenses, specifically the 85% Cost of Goods Sold (COGS) tied to payment gateways and fraud, combined with variable operational expenses that scale 1:1 with sales volume; you've got to understand these dynamics before diving deep into whether Is Payment Processing Business Highly Profitable? Fixed payroll will also be a major, unavoidable drain.
Transaction Cost Drag
Gateway and fraud costs consume about 85% of revenue immediately.
Variable support and marketing costs are 100% tied to sales volume.
If your platform takes a 3% commission, 85% of that 3% is gone before you cover overhead.
This leaves very little gross profit to cover your fixed operating expenses.
Fixed Overhead Pressure
High fixed payroll requires significant gross profit dollars to cover monthly.
You need high order density to absorb the fixed costs, which is defintely harder when margins are tight.
Payroll is the biggest non-transactional drain on the Profit and Loss statement.
If seller onboarding takes longer than expected, revenue stalls while fixed costs keep running.
How much working capital is required to reach the projected break-even date?
To reach the projected break-even date, you need enough working capital to cover the minimum cash requirement of $1,103 million projected for June 2028, plus a safety buffer for operational flexibility; understanding the underlying profitability drivers is key, so check out this analysis on Is Payment Processing Business Highly Profitable?, because defintely operational costs can shift fast.
Set the Cash Floor
Determine the required safety margin percentage above the $1,103 million minimum cash need.
The target date for achieving this minimum cash position is June 2028.
Working capital must bridge the gap between current cash and this $1,103M floor.
Model a 3-month operational cushion for unexpected delays in scaling.
Buffer Risk Factors
High minimum cash needs signal long ramp-up times for seller adoption.
Monitor seller churn closely; attrition hits the timeline to $1,103 million hard.
Ensure subscription revenue collection cycles align with fixed overhead payments.
Model the impact of a 15% delay in achieving projected transaction volume.
How will we cover essential running costs if transaction revenue is lower than expected?
If transaction revenue for Payment Processing falls short, immediately activate spending controls focused on discretionary items like the $250,000 annual marketing budget and defer non-essential hiring to defend the target $11 million minimum cash reserve, which is critical when assessing How Is The Growth Of Payment Processing Volume Impacting The Success Of Your Business? You must defintely have these levers ready.
Control Discretionary Burn
Freeze the $250,000 annual marketing budget immediately.
Scrutinize all non-essential vendor contracts.
Pause spending on new office equipment purchases.
Shift marketing focus to low-cost, high-return channels.
Protect Cash Floor
Maintain the $11 million minimum cash position.
Delay hiring for roles not directly supporting transaction flow.
Require VP-level sign-off for any expense over $10,000.
Model worst-case scenarios showing revenue below plan.
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Key Takeaways
The initial fixed monthly running cost for a Payment Processing platform is projected to be approximately $76,000 in 2026, dominated by payroll expenses.
Founders must secure sufficient working capital to cover the projected 31-month runway required to reach the break-even date in July 2028.
Variable costs tied to transaction volume are extremely high, with third-party gateway fees alone accounting for 70% of volume.
The first year's projected EBITDA loss is $903,000, necessitating a cash buffer to manage the minimum required working capital of over $1.1 million.
Running Cost 1
: Third-Party Gateway Fees
Gateway Fee Scale Shock
Third-party gateway fees represent a massive variable cost that scales directly with sales volume. By 2026, these fees are projected to consume 70% of your total transaction volume. This concentration means your margin structure is highly sensitive to fee rates, making proactive rate management essential right now.
Inputs for Fee Calculation
These fees cover the cost of using external processors to authorize and settle customer payments. To model this defintely, you need the projected Gross Transaction Value (GTV) for 2026 multiplied by the 70% rate. This cost dominates your variable expenses, dwarfing infrastructure and fraud software budgets.
GTV estimate for 2026.
Agreed-upon fee percentage.
Fixed fee per transaction (if applicable).
Negotiation Levers
Since this cost is 70% of volume, even small rate reductions yield big savings. Don't accept initial quotes; your volume growth demands continuous negotiation with payment partners. If onboarding takes 14+ days, churn risk rises due to payment friction.
Benchmark rates against competitors.
Bundle services for better pricing.
Explore alternative processors at scale.
Scaling Risk
If you hit projected volume targets, you must secure favorable tier pricing well before 2026. Failing to negotiate aggressively means this 70% drag will crush your contribution margin before you achieve meaningful operational leverage.
Running Cost 2
: Fraud Prevention Software
Budget 15% of GTV for Risk
You must budget 15% of Gross Transaction Value (GTV) in 2026 specifically for fraud prevention software licenses. This spend is non-negotiable for maintaining regulatory compliance and managing risk exposure on your payment platform. Honestly, skimping here guarantees higher costs later.
Inputs for Fraud Spend
This budget covers specialized software licenses needed to detect and stop fraudulent transactions before they process, which is key for risk management. To estimate this cost, you need a projection of your 2026 Gross Transaction Value. If GTV hits $100 million, this budget requires $15 million just for this risk layer.
Input: Projected 2026 GTV.
Calculation: GTV times 15%.
Context: Separate from gateway fees.
Controlling Software Spend
Since this cost scales with volume, controlling the actual rate of fraud loss is the primary lever. Negotiate license tiers based on expected transaction throughput, not just potential GTV. A common mistake is paying for high-level features that your current volume doesn't justify yet.
Negotiate volume-based tiering.
Focus on minimizing actual fraud losses.
Audit feature utilization quarterly.
Software vs. Gateway Fees
Keep this 15% software budget strictly separate from the 70% you allocate to Third-Party Gateway Fees. If your fraud prevention is weak, chargeback penalties will erode your contribution margin fast, making this software spend look cheap by comparison.
Running Cost 3
: Staff Wages and Salaries
2026 Payroll Run Rate
Your 2026 payroll runs about $62,500 monthly, which supports 55 full-time employees. This figure includes the new fractional Sales Manager coming online halfway through the year.
Payroll Inputs
This $62,500 monthly expense covers the core team of 55 FTEs necessary to run the platform infrastructure and support functions. You need to track hiring dates precisely, especially for the fractional Sales Manager starting mid-year, to avoid overstating the initial run rate. This is your largest fixed personnel outlay before scaling further.
Base 55 FTE salaries.
Factor in Sales Manager timing.
Watch for benefit add-ons.
Managing Headcount
Staffing costs are sticky, so hiring needs tight control; don't let the 55 FTEs balloon without proven revenue impact. A common mistake is hiring too early for anticipated volume, not actual volume. If onboarding takes longer than planned, you might carry excess salary load for a quarter or two.
Tie hiring to milestones.
Use contractors first.
Review compensation bands.
Mid-Year Salary Shift
Since the fractional Sales Manager starts mid-year, your actual average payroll expense for the first six months of 2026 will be lower than the $62,500 annual average. Model this accurately to avoid surprises when the full team headcount kicks in during Q3.
Running Cost 4
: Cloud Infrastructure
Set Cloud Budget
You must budget $3,000 monthly for cloud infrastructure. This covers hosting your marketplace platform and ensuring high uptime as transaction volume grows. This fixed cost supports the variable nature of seller activity. Honestly, don't skimp here.
Infrastructure Cost Basis
This $3,000 monthly allocation is for core hosting services needed by the platform. It covers servers, databases, and networking required to serve storefronts and process payments securely. It sits alongside $5,000 office rent and $3,500 security/compliance fees as essential fixed overhead.
Covers compute capacity for sellers.
Maintains required system reliability.
Scales to meet transaction demand.
Managing Hosting Spend
Optimize by using reserved instances for predictable base load, cutting costs versus pay-as-you-go rates. Watch data transfer fees, which scale directly with transaction volume, unlike fixed compute. If onboarding takes 14+ days, churn risk rises due to seller setup friction.
Use reserved instances for savings.
Monitor auto-scaling thresholds.
Audit data egress costs monthly.
Uptime Mandate
Platform uptime directly impacts seller trust and revenue capture, given the commission-based revenue model. Treat this $3,000 budget as non-negotiable infrastructure insurance; cutting it risks downtime that could cost far more in lost transaction fees.
Running Cost 5
: Digital Marketing
Marketing Spend Split
Your 2026 marketing budget is split: 80% scales directly with revenue, while a fixed $250,000 annually targets initial seller acquisition. This structure demands tight control over customer acquisition cost (CAC) relative to platform revenue.
Cost Inputs
The 80% variable marketing cost scales with gross transaction value in 2026, likely covering promoted listings or pay-per-click campaigns. Separately, $250,000 annually is budgeted strictly for acquiring new sellers onto the platform. This distinction is crucial for modeling your operational stucture.
Managing Scale
High variable spend means every dollar must drive profitable transactions. Focus on optimizing the blended CAC, especially for sellers acquired using the fixed budget. If revenue growth stalls, this 80% cost becomes a major drag on profitability, consuming most of your gross margin.
Margin Check
Since variable marketing is 80% of revenue, your platform’s take-rate and subscription fees must comfortably cover the remaining 20% plus all fixed overheads like the $250k acquisition budget. You need to track this very defintely.
Running Cost 6
: Office Rent
Fixed Rent Anchor
Fixed office rent hits $5,000 monthly, acting as a baseline overhead you must cover before seeing profit. This cost stays the same whether you process zero transactions or millions. It’s an unavoidable fixed expense for your physical footprint.
Cost Breakdown
This $5,000 monthly charge covers your physical office space, a cost that doesn't move with sales volume. It’s pure overhead. You need enough sales volume to generate contribution margin just to cover this before you pay down other fixed costs or make money. Honestly, it's a hurdle.
Fixed at $5,000 per month.
No variable component exists.
Must be covered by gross profit.
Overhead Management
You can't negotiate this down based on transaction volume, so management means aggressive lease negotiation or a remote-first structure. Many founders over-lease early on, tying up capital unnecessarily. Don't sign leases for space you won't use for 18 months just because you project rapid headcount growth.
Negotiate lease terms carefully.
Consider co-working hubs initially.
Avoid signing long leases too early.
Break-Even Pressure
This $5,000 fixed rent directly increases your break-even point. If your average contribution margin per transaction is $10, you need 500 transactions monthly just to pay the rent, not counting wages or software fees. It's a defintely fixed drag on early liquidity.
Running Cost 7
: Security and Compliance
Compliance Overhead
Security and compliance create a non-negotiable fixed overhead for any platform handling payments. Expect to budget $3,500 monthly for essential regulatory adherence. This figure combines $1,500 for mandatory compliance software and $2,000 for necessary external legal and accounting oversight. That's a firm baseline expense before processing a single transaction.
Cost Inputs
This $3,500 monthly commitment covers two distinct areas critical for operating legally. The software portion covers specific regulatory tools needed for payment handling, which are fixed fees. The legal/accounting portion covers ongoing advisory services required to keep up with changing financial rules, defintely not optional work. You need to map this against your projected revenue run rate.
Software cost: $1,500/month
Legal/Accounting: $2,000/month
Total fixed compliance: $3,500
Managing Legal Spend
You can’t skip compliance, but you can manage the advisory spend efficiently. Avoid paying premium rates for routine filings by standardizing processes. Centralize your compliance documentation to reduce billable legal hours. If your implementation cycle stretches past 14 days, compliance friction is likely slowing down seller adoption.
Benchmark legal fees now
Bundle software/legal quotes
Focus on process automation
Fixed Cost Context
Compared to the $62,500 in monthly staff wages or the $250,000 annual budget for seller acquisition, this $3,500 is small but unforgiving. It’s a fixed cost that must be covered every month before variable costs like the 70% third-party gateway fees even start applying to volume.
Total fixed running costs are about $76,000 monthly in 2026, driven primarily by payroll Variable costs add 85% of transaction volume for gateway and fraud fees, plus 100% for scalable support and marketing;
Financial models project a break-even date in July 2028, requiring 31 months of operation You must manage the cash burn, which peaks at a minimum cash requirement of -$1103 million in June 2028;
The largest variable costs are Third-Party Payment Gateway Fees (70% of volume in 2026) and Digital Marketing (80% of volume) Controlling these 15% costs is key to improving contribution margin
Payroll is the largest fixed expense, averaging $62,500 monthly in 2026
The model shows a payback period of 55 months
Yes, the minimum cash required is -$1,103,000 by June 2028, so securing adequate funding is defintely critical
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