// $ compound --monthly 300

Compound interest calculator

Money earns money. Then that money earns money. No application, no committee, no subsidy. Set a monthly amount and watch the snowball.

€
€
years
%

Before inflation, after fund costs

%

For example with your salary

%

2% is the central bank’s target, not what you necessarily pay. The official index leaves out the cost of owning a home. Set what you believe

Education, not advice. I don’t know your situation, and past returns promise nothing. Check my numbers, then make your own call. You’re a grown-up.

// how it is calculated

No black box.

  • “7% a year” means 7% after twelve months. Every month the balance grows by the matching monthly rate, then the savings amount is added at the end of the month.
  • The savings amount goes up once a year by the raise you set.
  • “In today’s money” divides the end value by inflation over the whole period.
  • Tax is not included, because it depends on where you live.
compound-interest – notes
# everything runs in your browser
# nothing is stored or sent
$ share --link
✓ your numbers travel in the link, not to a server