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finbreezy

Should I pay off my credit card or invest?

Last checked

Short answer

Clear the card first

It's costing you 21%, and no investment reliably beats that.

Card cleared
16 months
Interest paid
$1,190
Better off after 5 years
+$3,600
Net worth over five years
  • Card first, then invest
  • Invest first, pay the minimum
Net worth over five years, by year
YearCard first, then investInvest first, pay the minimum
0-$8,000-$8,000
1-$1,916-$2,249
2$5,328$4,043
3$13,149$10,946
4$21,535$18,539
5$30,527$26,918

The numbers

This answer is worked out with these.

Card balance
$8,000
Card interest (APR)
21%
Minimum payment, per month
$200
Spare cash, per month
$400
Expected investment return
7%
Time frame
60 months

Try your own numbers in the tools:

The trade-offs

Clear the card first

  • A guaranteed 21% return: every dollar paid off stops costing you 21%.
  • Debt-free in 16 months, with $1,190 of interest instead of $5,719.
  • Nothing invested for the first 16 months, so keep a small cash buffer.

Invest first

  • Your money starts compounding straight away.
  • Still owing $1,719 after five years, having paid $5,719 in interest.
  • Only comes out ahead if returns beat 21% a year, which is rare.

How we worked it out

You have $600 a month to put somewhere: the $200 card minimum plus $400 spare.

Card first puts all $600 on the card. At 21% APR that clears $8,000 in 16 months, with $1,190 of interest. From then on, the full $600 goes into investments growing at 7% a year.

Invest first pays the $200 minimum and invests the $400. Most of that minimum goes on interest, so after five years you've paid $5,719 in interest and still owe $1,719.

After 60 months, card first leaves you with a net worth of $30,527 against $26,918. That's about $3,600 more, simply by not paying 21% for longer than you have to.

Both paths assume interest is charged monthly and investments grow at 7% a year, compounded monthly. Real returns go up and down; card interest doesn't.