How Affirm Loan Interest, Down Payments & Pay-in-4 Work
Buy Now, Pay Later (BNPL) platforms like Affirm provide consumer installment financing at point-of-sale. Plan terms, APR, fees, payment timing, and eligibility can vary by merchant, product, borrower, and offer. Use this page as an independent estimate and review the lender's actual disclosure before accepting an offer.
Affirm Pay in 4 Schedule Breakdown ($375 Order Example)
This $375 example illustrates four equal payments under a hypothetical 0% APR Pay in 4 offer. Eligibility, minimums, payment timing, and available terms can vary, so confirm the offer shown at checkout:
| Payment Milestone | Due Date | Amount Due | Interest / Fees |
|---|---|---|---|
| Payment 1 (Down Payment) | Today (Checkout) | $93.75 | $0.00 (0% APR) |
| Payment 2 | 2 Weeks Later (Day 14) | $93.75 | $0.00 (0% APR) |
| Payment 3 | 4 Weeks Later (Day 28) | $93.75 | $0.00 (0% APR) |
| Payment 4 (Final) | 6 Weeks Later (Day 42) | $93.75 | $0.00 (0% APR) |
The Affirm Simple Interest Formula
Total Interest = Principal (P) × (Annual APR ÷ 100) × (Term in Months ÷ 12)
Monthly Payment = (Principal + Total Interest) ÷ Term in Months
*Note: This is a simplified estimate. Review the actual offer disclosure for APR, fees, payment schedule, late-payment treatment, and prepayment terms.
Affirm Monthly APR Tier Comparison Table
| Loan Amount | Term | 0% Promo APR | 15% Standard APR | 30% Max APR |
|---|---|---|---|---|
| $500 | 6 Months | $83.33/mo ($0 fee) | $87.08/mo ($22.50 int) | $90.83/mo ($45.00 int) |
| $1,000 | 12 Months | $83.33/mo ($0 fee) | $95.83/mo ($150.00 int) | $108.33/mo ($300.00 int) |
| $2,500 | 24 Months | $104.16/mo ($0 fee) | $135.41/mo ($750.00 int) | $166.66/mo ($1,500.00 int) |
Does Paying Off Affirm Early Save You Money on Interest?
Early payoff may change the interest you pay, but the result depends on the specific agreement and payment schedule. Check the actual offer disclosure for payoff terms and do not assume every plan uses the same calculation.





