91.5 Million Americans Use Buy Now, Pay Later — and This Fall It Finally Starts Moving Their Credit Scores. Here Are the 5 Myths That Could Quietly Cost You Points.

Myth #1: 'Buy now, pay later never touches your credit report'

This was true for years. It is not true anymore. Klarna has reported to TransUnion and Equifax since 2023 and, as of 2026, sends all transaction types — including its flagship Pay in 4 — to both bureaus. Affirm began reporting in 2025 and now feeds Experian and TransUnion, treating its short-term four-installment plans as installment accounts on your Experian file alongside its longer-term financing.

The invisible debt is becoming visible fast. BNPL loans totaled roughly $70 billion in transaction value in 2025, and while that's still only about 1.1% of credit card spending, the volume is large enough that bureaus and lenders can no longer afford to ignore it. Treat every BNPL plan you open in 2026 as something a future lender may see.

Myth #2: 'If one provider reports, they all do'

Not even close — and this is the detail that trips people up. The three biggest names each play by different rules right now, which means the same $150 purchase can be invisible or fully reported depending on which button you tap at checkout.

Who reports what in 2026

• Klarna — reports all transaction types, including Pay in 4, to TransUnion and Equifax.
• Affirm — reports to Experian and TransUnion; short-term Pay in 4 shows up as an installment account, and longer-term loans report in full.
• Afterpay — its standard Pay in 4 product does NOT report to Experian, TransUnion or Equifax as of 2026, so on-time payments there build no visible history and late ones stay off your file (for now).
• The practical takeaway: if you want a BNPL plan to help build credit, the provider matters as much as your payment history.

Myth #3: 'BNPL on my report can only hurt my score'

The fear is understandable, but the data cuts both ways. FICO's two new models — FICO Score 10 BNPL and FICO Score 10 T BNPL — are the first to factor point-of-sale installment loans directly into scores, and in early testing, consumers with five or more Affirm loans typically saw their scores hold steady or rise when they paid on time.

FICO also built in a safeguard: the models bundle multiple BNPL loans into a single 'group' rather than treating each small plan as a separate new account. That design choice matters, because under older scoring logic, opening six little installment loans in a month could look artificially risky. Grouped together, responsible use reads as exactly what it is — a pattern of small debts paid back on schedule.

Myth #4: 'A late BNPL payment is no big deal'

This is the myth most likely to cost you. Once BNPL activity feeds the bureaus and the new FICO models, a missed installment behaves like any other delinquency — it can drag your score down. And the exposure is not rare: 41% of BNPL borrowers report having paid late at least once in the past year, a slip rate that was harmless when the loans were invisible and is now a genuine credit risk.

Layer that on top of an already expensive borrowing environment. The average credit card APR sat at 24.93% as of late August 2026. A BNPL misstep that dings your score can nudge you into worse pricing on the debt that actually carries interest — turning a 'free' installment plan into a costly one by proxy.

Myth #5: 'The new scores are already everywhere, so it's too late to prepare'

The rollout is gradual, not instant. FICO began including BNPL data in fall 2025, but the new models take effect only as individual lenders choose to adopt them, and many still pull older FICO versions today. That lag is your window.

It won't stay open forever. The direction is one-way: more providers reporting, more bureaus receiving, more lenders scoring on BNPL-aware models. The households that treat their installment plans like real credit now — few open accounts, every payment on time — will walk into the new era with a head start instead of a surprise.

What to actually do before your next checkout

• Cap the number of open BNPL plans at once — each one is now potentially a reported account, and clustered new accounts can weigh on your score.
• Automate every installment. Autopay is the single cheapest insurance against the one late payment that does the damage.
• Know your provider. If building credit is the goal, favor reporting providers (Klarna, Affirm) over ones that don't report.
• Pull your credit reports at AnnualCreditReport.com and check whether your BNPL loans are already showing — and that they're showing accurately.
• Don't let a 'no interest' label fool you into stacking plans you'd never put on a card. The debt is real even when the interest is zero.

The bottom line

Buy now, pay later isn't off the grid anymore. In 2026 it can build your credit or bruise it — the difference is almost entirely whether you pay on time and how many plans you keep open. Run the numbers on any balance you're carrying before you add another split-pay plan on top.