Banking-as-a-Service Cost Calculator
BaaS platform cost from features and user volume.
About this calculator
The Banking-as-a-Service Cost Calculator estimates what a fintech company or embedded-finance product actually pays a BaaS provider (platforms like Unit, Treasury Prime, Synapse, or Column) to run bank accounts, cards, and payment rails without holding its own bank charter. Total monthly cost adds up five components: the provider's flat monthly platform fee, per-account fees charged on every currently active end-user account, per-transaction fees on card, ACH, and wire activity, KYC/identity-verification costs for each new account onboarded that month, and a compliance overhead percentage layered on top of those direct costs to cover the legal, audit, and BSA/AML monitoring work a regulated banking product requires. The compliance overhead is applied as a percentage of direct costs rather than a flat fee, so it scales automatically as account volume, transaction volume, or onboarding pace grows — a larger program carries proportionally larger compliance overhead in dollar terms, not just in direct fees.
Cost per account and cost per transaction are unit-economics figures: they divide the fully loaded total monthly cost (including the amortized platform fee and compliance overhead) across active accounts or monthly transactions, so they fall as volume scales up, since the fixed platform fee and much of the KYC cost get spread across a larger base. These per-unit figures are what a fintech typically compares against its own per-account or per-transaction revenue to judge whether the BaaS relationship is profitable at a given scale.
Inputs
Results
Total monthly BaaS cost
$12,100.00
Annual BaaS cost
$145,200.00
How to Use This Calculator
- Enter Platform base fee ($/mo), Active accounts, and Per-account fee ($/mo).
- Set Monthly transactions, Per-transaction fee ($), and New accounts/month.
- Adjust KYC cost per account ($), Compliance overhead (%) as needed.
- Review Total monthly BaaS cost ($) and Annual BaaS cost ($).
- Use Cost per account ($/mo) and Cost per transaction ($) to inform your decision.
How the result changes with Monthly transactions
| Monthly transactions | Total monthly BaaS cost | Annual BaaS cost |
|---|---|---|
| 25,000 | $9,350.00 | $112,200.00 |
| 37,500 | $10,725.00 | $128,700.00 |
| 75,000 | $14,850.00 | $178,200.00 |
| 125,000 | $20,350.00 | $244,200.00 |
What each input means
- Platform base fee ($/mo)
- Monthly SaaS fee charged by the BaaS provider (e.g., Unit, Treasury Prime, Column).
- Active accounts
- Total number of end-user accounts currently provisioned on the platform.
- Per-account fee ($/mo)
- Monthly fee charged per active account (typically $0.25-$2.00).
- Monthly transactions
- Total card, ACH, and wire transactions processed per month.
- Per-transaction fee ($)
- Fee per transaction (ACH ~$0.05-0.25, card ~$0.10-0.30, wire ~$1-5).
- New accounts/month
- Number of new users onboarded per month requiring KYC verification.
- KYC cost per account ($)
- Identity verification cost per new user (typically $1-5 for KYC, $10-50 for KYB).
- Compliance overhead (%)
- Additional compliance cost as percentage of direct BaaS costs (legal, audit, BSA/AML monitoring).
What each result means
- Total monthly BaaS cost
- All-in monthly cost including platform fees, per-account fees, transaction fees, KYC, and compliance.
- Annual BaaS cost
- Projected total BaaS cost over 12 months.
- Cost per account ($/mo)
- Fully loaded monthly cost per active account — key unit economic for profitability analysis.
- Cost per transaction ($)
- Fully loaded cost per transaction including overhead allocation.
- Account fees
- Monthly fees from per-account charges.
- Transaction fees
- Monthly fees from per-transaction charges.
- KYC/onboarding cost
- Monthly cost for identity verification of new accounts.
- Compliance overhead
- Estimated monthly compliance, legal, and audit costs.
How this is calculated
Worked example, using the default values
- Identify Input Parameters8 parametersPlatform base fee ($/mo) = 2500, Active accounts = 5000, Per-account fee ($/mo) = 0.5, Monthly transactions = 50000, Per-transaction fee ($) = 0.1, New accounts/month = 500, KYC cost per account ($) = 2, Compliance overhead (%) = 10 = 8 input(s) provided
- Calculate Total monthly BaaS costTotal monthly BaaS cost = directCost + complianceCost12100 = $12,100
- Calculate Annual BaaS costAnnual BaaS cost = totalMonthlyCost * 12145200 = $145,200
- Calculate Cost per accountCost per account = activeAccounts > 02.42 = $2.42
- Calculate Cost per transactionCost per transaction = monthlyTransactions > 00.242 = $0.242
Engine last updated . Checked against 2 independently-derived tests — how we verify calculators. Built by Paul Gunder, a software engineer, not a licensed financial, medical, or legal professional.
Frequently Asked Questions
What's included in Total monthly BaaS cost?
Total monthly BaaS cost sums the platform's flat monthly fee, per-account fees across all active accounts, per-transaction fees across monthly transaction volume, and KYC/onboarding costs for new accounts, then adds a compliance overhead percentage on top of that direct cost total to cover legal, audit, and BSA/AML monitoring work. It does not include your own internal engineering or product headcount — only what you pay the BaaS provider and the compliance overhead layered on top of their fees.
Why does Cost per account go down as I add more active accounts?
The monthly platform fee and a portion of transaction and KYC costs are largely fixed or grow more slowly than account count, so spreading that fixed cost across more active accounts lowers the average cost per account. The per-account fee itself doesn't change, but the fixed platform fee's share of each account's fully loaded cost shrinks as the account base grows — this is standard fixed-cost amortization, the same dynamic that makes SaaS unit economics improve with scale.
How is the compliance overhead percentage applied?
Compliance Overhead (%) is multiplied against the sum of direct BaaS costs (platform fee, account fees, transaction fees, and KYC cost) — not against revenue or account count directly — to estimate legal, audit, and BSA/AML monitoring expense. Because it scales with direct costs rather than being a flat monthly add-on, a program with heavier transaction or onboarding volume carries proportionally more dollars of compliance overhead, even at the same percentage rate.
What's the difference between the per-account fee and Cost per account?
Per-account fee ($/mo) is a single input — the flat monthly charge the BaaS provider bills for each active account. Cost per account ($/mo) is a computed output: the fully loaded total monthly cost (including the platform fee, transaction fees, KYC cost, and compliance overhead, not just the per-account fee) divided by the number of active accounts. Cost per account can never be smaller than the raw per-account fee, since it absorbs every other cost component too.
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