PayPal Credit has spent years selling itself as the easy way to split a purchase into six months with "no interest." What the checkout page doesn't shout about is what happens the moment you miss that six-month window.
That's when the other number kicks in: a 29.99% APR.
But it's disclosed the way a car dealership mentions the financing office—technically, in writing, in a place you scroll past while you're trying to buy shoes. **How the math actually bites** PayPal Credit's promotional offers work like this: spend $99 or more, get six months interest-free on that purchase.
Pay it off in full by the deadline and you owe nothing extra.
Miss the deadline by a day, or carry a balance past it, and the standard purchase APR applies.
Here's the part that catches people: that 29.99% doesn't just apply going forward.
Depending on the offer terms, deferred interest can be charged retroactively from the purchase date.
That means a $600 purchase you paid down to $150 could suddenly owe interest on the full $600, not the remaining $150.
That's the mechanism consumer advocates have complained about for years.
It's legal, it's disclosed, and it's brutal if you're the one who misjudges a date. **Who actually benefits** PayPal isn't running a charity.
Promotional financing exists because a meaningful share of users won't pay off the balance in time, and those users generate interest revenue.
The people who pay in full get a free loan.
This is the same model as store credit cards, which routinely carry APRs north of 25%.
Retailers and lenders know that "zero interest" is a powerful phrase at checkout, and they know the deadline is easy to forget. **What to do about it** If you're using PayPal Credit, treat the promotional deadline like a bill due date and set a calendar reminder two weeks early.
Pay more than the minimum—minimums are calculated to stretch the balance out.
And if you can't pay it off in time, consider whether the purchase can wait or go on a lower-rate card.
The 29.99% rate isn't the highest in the market, but it's high enough to erase any savings from a "deal" fast.
A 20% off purchase financed at 29.99% for a year isn't a discount.
It's a loss. **The bottom line** PayPal Credit can be a genuinely useful tool if you're disciplined and pay in full.
The difference between those two outcomes is a calendar reminder and a budget—not luck.
Final Thoughts
Read the terms before you click, not after the statement arrives.