Buy now, pay later feels low-stakes when you check out, but missing a payment sets off a predictable chain of events. The exact consequences depend on which provider you used — Klarna, Afterpay, Affirm, Sezzle, Zip, and PayPal Pay in 4 each handle late payments differently — and on whether you used a short "pay in 4" plan or a longer monthly installment loan. Below is the consequence ladder, from the first late fee to the worst-case lawsuit, with what we could verify about each major provider.
This page is general information, not financial or legal advice. BNPL terms and provider policies change frequently — always verify the late-fee amount, collections timeline, and credit-reporting policy directly in your account or with the provider before relying on anything here.
Step 1: You may get a late fee — but not always
The first thing that usually happens is a late fee, and this is where providers differ the most:
- Afterpay charges a late fee but caps it. Total late fees are limited to 25% of the order price and will not exceed a fixed per-order maximum. For orders under a certain threshold, the fee is charged only once; for larger orders, an initial fee applies and a further fee can be added if the payment is still unpaid about a week after the due date.
- Klarna charges up to a small flat fee (around $7 in the US) per missed installment on its Pay in 4 plans. If a charge fails, Klarna typically retries, and an unpaid amount can be rolled into your next scheduled payment.
- Affirm states it charges no late fees on its loans, including Pay in 4 — that's a core part of its model. (Affirm does charge interest on some longer monthly plans, but not late penalties.)
Because these policies shift and vary by provider and even by order, treat the specifics above as a snapshot. Check the fee schedule shown in your own purchase confirmation or app.
Step 2: Your account gets suspended
Almost universally, the moment you miss a payment your provider freezes your account. Afterpay pauses your account immediately and you can't buy anything else until you're caught up, and it may lower your spending limit. Klarna also blocks further use of the service until the past-due balance is paid. This is the provider's main leverage: it costs them nothing and it stops you from stacking more debt on a delinquent account. Getting current usually restores access, though your spending limit may stay reduced for a while.
Step 3: The debt can be sent or sold to a collection agency
If the balance stays unpaid, the provider eventually stops trying to collect itself and hands the debt to a third-party collection agency — or sells it outright to a debt buyer. The timeline varies and is not standardized across the industry. For Pay in 4 plans, a missed balance is often escalated to collections somewhere in the range of roughly 30 to 120 days past due; longer-term installment plans may take longer. Once that happens, you'll start hearing from a company you've never dealt with, not from Klarna or Afterpay directly.
This is the most important shift, because a third-party collector is governed by the Fair Debt Collection Practices Act (FDCPA, 15 U.S.C. § 1692 and following). That law restricts how and when they can contact you and bans abusive or deceptive tactics. Crucially, under 15 U.S.C. § 1692g, the collector must send you a written validation notice, and if you dispute the debt in writing within 30 days, they must stop collection until they verify the debt. If a BNPL collector starts hounding you, that's the protection to use — see the debt-validation page linked below.
Step 4: Missed payments may hit your credit report
Historically, short "pay in 4" BNPL plans did not show up on credit reports at all. That has been changing. In 2025, Affirm began reporting its pay-over-time products, including Pay in 4, to Experian and TransUnion for loans issued on or after its rollout dates — though it does not report to Equifax, and some of that data isn't yet factored into traditional scores. Other providers report selectively. The upshot: a missed BNPL payment is no longer guaranteed to be invisible, and a debt that lands in collections can be reported by the collector regardless of the original provider's policy.
We keep the credit-score details on a dedicated page so this one stays focused on consequences — see Does BNPL affect your credit score? for which plans report and how scores are affected.
Step 5: Can you be sued for unpaid BNPL?
Technically, yes — an unpaid debt is an unpaid debt, and once it's with a collector or debt buyer, they can file a lawsuit. In practice, lawsuits over small Pay in 4 balances are uncommon, because the amounts often aren't worth the cost of suing. The bigger risk is being sued on a larger or older balance. If you ever are sued, do not ignore it — failing to respond usually leads to a default judgment, which can open the door to wage garnishment or a bank levy depending on your state. See what happens if you ignore a debt collection lawsuit.
And to clear up the most common fear: you cannot be jailed for not paying a BNPL bill. It's a private consumer debt, not a crime. (More on that myth on our jail page.)
Affirm's longer installment loans behave like normal loans
One distinction worth calling out: Affirm's longer monthly installment loans (the interest-bearing kind, not Pay in 4) act much more like a traditional personal loan. They are reported to credit bureaus, missed payments can damage your score, and the balance can be sent to collections and ultimately litigated like any other loan. So while Affirm's no-late-fee promise is real, "no fee" doesn't mean "no consequences" on these larger plans — the credit and collections risk is the same as any installment debt.
A note on the rules (and why they're in flux)
The legal framing around BNPL is unsettled. In 2024 the CFPB issued an interpretive rule treating some BNPL providers like credit-card issuers under the Truth in Lending Act (Regulation Z), which would have given users dispute and billing-error rights. The CFPB withdrew that interpretive rule in May 2025 and has since indicated it does not plan to reissue it. What this means for you: don't assume you automatically have the same federal dispute rights as a credit card on every BNPL purchase. Your strongest, settled protections kick in once a debt reaches a third-party collector (FDCPA) — and your provider's own refund and dispute process for purchase problems. Because this area is volatile heading into 2026, check current rules rather than relying on a screenshot.
If you're behind: free help first
BNPL balances are usually small, so the right move is rarely a paid debt-settlement company — that tool is built for large, older debts and isn't worth its fees here. Instead:
- Contact the provider before you default. Some offer to reschedule a payment date. Catching up restores your account and stops the late-fee bleed.
- If it's already in collections, use your FDCPA rights. Send a written dispute within 30 days and make the collector validate the debt — start with a debt validation letter, and learn how to make debt collectors stop calling.
- Get free, non-profit help. A non-profit credit counseling agency (look for NFCC-affiliated counselors) can review your full picture at no or low cost.
- If balances are piling up across several apps, see how to get out of buy now, pay later debt for a payoff plan.
The earlier you act, the cheaper and simpler it stays — a paused account is far easier to fix than a debt that's been sold to a collector.