Do you know what your credit card debt
is really costing you?

Pay Down calculates the true cost of every credit card purchase after interest — and gives you free calculators to plan your way out of debt.

Explore Pay Down

The credit card debt app that does the math

Pay Down breaks down interest purchase by purchase, so you can see exactly where your money is going — and plan a way out.

Pay Down

See the true cost of every credit card purchase after interest. Free payoff, balance transfer, and minimum payment calculators. Available on iOS and Android.

Learn More Credit card interest, explained

Free in your browser

Free Calculators

See what a credit card purchase really costs after interest — no signup, no download. Start with the True Cost Calculator.

True Cost Calculator Balance Transfer Calculator Debt Consolidation Calculator Minimum Payment Calculator Mortgage Calculator Average Daily Balance Calculator

Featured Story

"Most people know carrying a balance is expensive. Almost no one knows what each purchase actually costs them. Six months of per-purchase tracking taught me more about my spending than a decade of statements."

I Tracked the True Cost of Every Purchase for 6 Months — Here's What Changed

Read the story →

From the Pay Down Blog

The Psychology of Credit Card Debt: Why It's So Hard to Pay Off

Credit card debt is hard to pay off for reasons rooted in behavioral economics: present bias, pain-of-paying suppression, mental accounting, and minimum-payment anchoring all work against borrowers. Understanding these cognitive mechanisms is the first step toward breaking the cycle.

July 14, 2026

How to Read Your Credit Card Statement (And What the Bank Won't Explain)

Statements are designed to be paid, not understood. Here's a section-by-section walkthrough of what every line actually means — including the ones your bank glosses over.

July 10, 2026

The Hidden Cost of Credit Card Rewards Programs

Rewards cards offering 1–5% cash back or points are outpaced almost immediately by credit card interest when a balance is carried, turning apparent gains into net losses. This article shows the break-even math and explains why the rewards-vs-interest tradeoff rarely favors cardholders who don't pay in full.

July 3, 2026

See all articles

Do you know what your credit card debtis really costing you?