Understand the true cost of your buy now pay later debt.
Track BNPL plans across Klarna, Affirm, Afterpay, Sezzle, PayPal Credit, and other services. See total debt, monthly payments, interest costs, and payoff timelines—all in one free calculator.
Educational Use Only: This calculator provides estimates for educational purposes only. Results may not reflect actual costs. Use this tool to understand your BNPL spending patterns, not as a substitute for professional financial advice.
Add a BNPL Plan
Add your first BNPL plan to get started
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How it works
Three steps to understand your BNPL spending.
Step 1
Add your BNPL plans
Enter each plan's provider, total price, remaining balance, monthly payment, and interest rate (if applicable).
Step 2
See your total debt
View your total BNPL debt across all plans, monthly payment obligations, and estimated payoff timeline.
Step 3
Calculate BNPL-to-income
Optionally enter your income to see what percentage of earnings go to BNPL—aim to stay under 20%.
Why It Matters
BNPL feels easy because it's fragmented. That's the trap.
When you split purchases across multiple BNPL providers, each plan feels manageable in isolation. But combined, your monthly obligations can quickly spiral. This calculator brings them together so you can see the full picture.
Hidden Interest Costs
Many BNPL plans charge interest if you miss a payment or the service has APR-bearing options. Track these costs with our calculator.
Monthly Budget Impact
Your BNPL payments count toward your total debt service ratio. See exactly how much of your income goes to installment payments.
Credit Impact
BNPL accounts can affect your credit score if providers report to bureaus. Understanding your total exposure helps you manage credit health.
FAQ
Common questions about BNPL and this calculator.
Keep going
Track BNPL automatically in Smart Debt Flow.
This calculator is built for quick snapshots. Smart Debt Flow syncs with your accounts, tracks BNPL alongside other debts, and shows you the fastest payoff path using AI-powered coaching.