What happens if you pay $100 extra on your credit card every month?
On a $5,000 balance at 22% APR, minimum payments take 137 months and cost $8,678 in interest. Adding $100 a month clears it in 34 months and saves $6,928.
The numbers
Timeline: what happens, and when
- After 6 months$4,319
You owe $4,319 instead of $4,948 — $628 less debt.
- After 12 months$3,561
You owe $3,561 instead of $4,889 — $1,329 less debt.
- After 24 months$1,770
You owe $1,770 instead of $4,752 — $2,981 less debt.
- After 36 months$0
The card is paid off. On minimum payments alone you would still owe $4,580.
- After 60 months$0
The card is paid off. On minimum payments alone you would still owe $4,103.
What this actually means
Minimum payments are designed to be slow
A 2% minimum on $5,000 barely outruns 22% interest. That is why 137 months of payments end up costing $8,678 in interest alone.
Every extra dollar earns 22, guaranteed
Paying down a 22% card is a risk-free 22% return. No investment offers that reliably — which is why debt payoff beats investing at these rates.
The tipping point
Your $100 extra shortens the loan by 103 months. Doubling it to $200 clears the balance in 21 months.
What if you changed the number?
Same habit, different size. Each one is a full simulation of its own.
Frequently asked questions
How long to pay off $5,000 paying $100 extra a month?
About 34 months (2.8 years), versus 137 months on minimum payments only.
How much interest does the extra payment save?
$6,928 — about 4.1 months of median US rent — and you finish 103 months earlier.
Should I invest that money instead?
At 22% card interest, almost never. You would need to beat 22% after tax, every year, with certainty. Pay the card first, then invest.
Assumptions behind these numbers
- Assumes a $5,000 balance at 22% APR, no new purchases, and a minimum payment of 2% of the original balance (floor $25).