Understanding the Effective Interest Rate in Merchant Cash Advances
- Business Debt Counsel
- Aug 29, 2025
- 2 min read

Merchant Cash Advances (MCAs) can look like a quick fix for small business cash flow needs. The promise of fast funding with minimal paperwork is tempting, but many business owners don’t realize the true cost until it’s too late. That’s where the Effective Interest Rate (EIR) comes in—it reveals the real price of borrowing.
What Makes EIR Different?
Unlike the simple “factor rate” advertised by MCA providers, the EIR takes into account how quickly you’re paying back the advance. Factor rates such as 1.3 might sound harmless, but when you add in daily or weekly repayment schedules, the actual annual cost often skyrockets above 100%.
EIR provides a more accurate comparison to traditional small business loans or SBA financing, which typically carry interest rates in the single digits or teens. By understanding EIR, you can see whether an MCA is truly worth it—or if it will drain your cash flow.
A Shocking Example
Imagine borrowing $50,000 with a 1.3 factor rate, meaning you must repay $65,000. If $500 is deducted daily, the advance could be paid off in just six months. On paper, that might seem manageable. But when calculated as an annualized rate, the EIR shows you’re paying far more than 30%—closer to 100% or higher.
Why It Matters
Ignoring the EIR can put businesses at serious financial risk. High repayment speeds, large daily withdrawals, and confusing contracts often leave owners struggling to stay afloat. Some MCA agreements have even been challenged under usury laws because of their excessive costs.
Protecting Your Business
Before signing any MCA contract, take the time to calculate your EIR or consult a financial professional. If you’re already stuck in a high-cost MCA, seeking legal or settlement help can provide relief.
Understanding the Effective Interest Rate in Merchant Cash Advances isn’t just smart—it could save your business from crippling debt and keep your cash flow working for you, not against you.
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