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Free finance calculators, with the formula

A $2,000 weekly check with 12 percent federal withholding leaves $1,607. FICA is $153. This is not a tax engine. Change a number, then open a mortgage or a deal model.

Take-home this check

$1,607.00

80.35% of gross. FICA is $153.00.

Gross
$2,000.00
FICA
$153.00
Take-home
$1,607.00
$
%

Full paycheck page, with the formulaHow FICA worksA first mortgageA first modelAll three paths

Then a mortgage, or a deal

Each figure is the default on that page, which is also that page's first worked example.

Tools you can drag

Debt snowball vs avalanche simulator, Extra payment curve you can drag, or Employer match curve you can drag. Move a rate or a payment and watch the picture change.

One concept each

  1. How FICA and take-home pay work
  2. How the price to earnings ratio works
  3. How return on equity (ROE) works
  4. How credit utilization works

The pairs people mix up

Sister of EconLearn, the AP Economics site with the graphs you can drag. How the numbers here are checked.

This page is educational material, not financial advice. The figures come from the formula shown and assume the inputs you enter hold for the whole term. Your own rate, fees, taxes and timing will differ, so treat the output as arithmetic to check a decision against, not as a recommendation.