Effective hourly pay change for a compressed week.

Going from a 50,000 five-day week (40 hours) to a four-day week at 45,000 with 32 hours raises your effective hourly rate from 24.04 to 27.06 — a 12.6% improvement on time-value, even though headline pay dropped 10%. The 4-day pay cut hurts gross income but often improves effective hourly rate.

What the result means

Effective hourly rate is salary divided by annual hours. The change shows whether you are gaining or losing on time-value. Many four-day arrangements actually improve hourly rate even with the headline pay cut, because hours fall faster than salary.

Non-cash benefits matter too — if pension and other benefits are based on full salary, a pay cut reduces them. If benefits scale with reduced hours, the pay cut hurts twice.

Run it with sensible defaults

Using current annual salary of 50,000, current hours per week of 40, new annual salary of 45,000, new hours per week of 32, the calculation works out to 12.50%. Nudge the inputs toward your own situation and the output recalculates instantly. The defaults are meant as a starting point, not a recommendation.

The levers in this calculation

The inputs — Current Annual Salary, Current Hours Per Week, New Annual Salary, and New Hours Per Week — do not pull with equal force. Not every input has equal weight. Flip one at a time toward extreme values to feel which ones move the needle most for your situation.

How the math works

Effective hourly rate is annual salary divided by weekly hours times 52. Change is the percentage difference between new and old hourly rates. A positive change means the four-day arrangement improves hourly value. The working is transparent — you can verify every step yourself in the formula section below. No black box, no opaque "proprietary model".

What the headline number hides

Gross pay, net pay, and what actually lands in your account can differ by thousands depending on tax code, benefits, pension contributions, and student loan deductions. This tool isolates one piece of that picture — always pair it with a take-home calculator for the full view.

What this doesn't capture

Tax bands, pension contributions, student-loan deductions, and benefits-in-kind sit outside this calculation. The figure is the headline; your actual position depends on local tax rules and personal circumstances. Pair with a dedicated take-home calculator for the full picture.