Annual cost of recurring late payment fees.

12 late fee × 6 times/year × 10 years: 720 lifetime cost. Add 25% APR penalty interest activation: thousands. Auto-pay minimums prevents late fees — single easiest fix saving meaningful money.

Quick example

With fee per late payment of 12 and lates per year of 6 (plus years of 10), the result is 720.00. Change any figure and watch the output shift — it's often more useful to see the pattern than to memorise the formula.

Which inputs matter most

You enter Fee per Late Payment, Lates per Year, and Years. Frequency and unit price pull the total in different directions. The biggest surprise for most people is how small recurring amounts compound into large annual figures — that's where this calculation earns its keep.

What's happening under the hood

Simple multiplication. The formula is listed in full below. If the number looks off, you can retrace the calculation by hand — that's the point of showing the working.

Using this to stay on track

The most common failure mode isn't the plan itself — it's letting the balance creep back up while you're paying it down. Set a rule: no new debt added to the same account until the balance is zero. The calculator is only useful if the number it shows doesn't keep resetting.

What this doesn't capture

Real payoff journeys include missed payments, fee changes, balance transfers, and promotional rates that reset. The calculation assumes a steady plan; reality is rarely that clean. Use the figure as the best-case plan against which actual progress gets measured.

Where to go next

This calculation rarely sits alone in a planning exercise. If you're running these numbers, you'll probably also want the credit card interest calculator, the buy now pay later true cost, and the bnpl true cost calculator global — each one answers a different question in the same territory. Treating them as a set rather than in isolation usually produces a more honest picture.