4 Day Work Week Salary Prorate Calculator
Calculate your estimated salary when moving from a standard work week to a 4 day work week. Prorate your annual salary by working days or weekly hours and see the difference in annual, monthly and weekly pay.
What Is a 4 Day Work Week Salary Prorate Calculator?
A 4 day work week salary prorate calculator estimates how much your salary may change when your working schedule is reduced from a standard work week to four days.
For example, an employee earning $50,000 per year while working five days per week may want to know what the equivalent salary would be if the employer pays proportionally for four days instead.
This calculator can prorate salary based on either the number of working days or the number of weekly working hours.
How to Use the 4 Day Work Week Salary Calculator
Start by entering your current annual salary and choosing your preferred currency.
Then choose whether you want to prorate your salary using working days or weekly hours.
If you choose working days, enter your current number of workdays and your new number of workdays. A typical example would be moving from five days to four days.
If you choose weekly hours, enter your current weekly hours and the number of hours you expect to work under your new schedule.
Click Calculate Salary to see your estimated:
- New annual salary
- Monthly salary
- Weekly salary
- Annual salary difference
- Percentage of your original salary
- Percentage reduction
- Approximate pay per working day
4 Day Work Week Salary Prorate Formula
When salary is prorated according to the number of working days, the calculator uses the following formula:
Example: Moving From 5 Days to 4 Days
Suppose your current annual salary is $50,000 and you currently work five days per week.
If your new schedule is four days per week and your salary is reduced proportionally:
Your prorated annual salary would therefore be approximately $40,000.
This means you would receive 80% of your original salary because you are working 80% of your previous number of working days.
4 Day Work Week Salary Example
| Item | 5 Day Week | 4 Day Week |
|---|---|---|
| Annual Salary | $50,000 | $40,000 |
| Work Days Per Week | 5 days | 4 days |
| Salary Percentage | 100% | 80% |
| Approx. Monthly Salary | $4,166.67 | $3,333.33 |
| Approx. Weekly Salary | $961.54 | $769.23 |
How Do You Prorate Salary From 5 Days to 4 Days?
If an employee works five days per week and moves to four days with salary reduced proportionally, the new schedule represents:
This means the employee works 80% of their previous workdays. A proportional salary would therefore normally be 80% of the previous salary.
For example:
| Current Salary | 80% Prorated Salary |
|---|---|
| $40,000 | $32,000 |
| $50,000 | $40,000 |
| $60,000 | $48,000 |
| $75,000 | $60,000 |
| $100,000 | $80,000 |
Prorating Salary by Weekly Hours
Some employees do not reduce their work schedule by exactly one full day. Instead, their salary may be adjusted based on weekly working hours.
In that case, the following formula can be used:
For example, an employee earning $50,000 for 40 hours per week who reduces their schedule to 32 hours per week would receive:
Does a 4 Day Work Week Always Mean a 20% Salary Cut?
No. A four-day work week does not automatically mean that an employee loses 20% of their salary.
There are different types of four-day work arrangements.
Reduced Hours With Prorated Salary
An employee may work fewer hours and receive a proportionally reduced salary. For example, moving from five days to four days may result in receiving approximately 80% of the previous salary.
Compressed 4 Day Work Week
An employee may still work the same total weekly hours but compress those hours into four longer days.
For example:
4 × 10 hours = 40 hours
In this situation, salary may remain unchanged because the total working hours remain the same.
Reduced Hours With Full Salary
Some employers offer a four-day work week while keeping an employee's full salary. In this arrangement, salary is not prorated even though working time is reduced.
This calculator is designed primarily for situations where salary needs to be adjusted proportionally.
4 Day Work Week vs Compressed Work Week
A reduced four-day work week and a compressed work week are not necessarily the same.
| Schedule | Example | Possible Salary Impact |
|---|---|---|
| Standard Week | 5 × 8 hours | Normal salary |
| Reduced 4 Day Week | 4 × 8 hours | May be prorated |
| Compressed 4 Day Week | 4 × 10 hours | May remain unchanged |
If you are compressing your normal weekly hours rather than reducing them, try our Compressed Work Week Hours Calculator .
How Much Is 80% of a Salary?
When moving from five working days to four working days with proportional salary, you are typically working 80% of the previous number of days.
To calculate 80% of a salary:
For example:
Can I Use This Calculator for Other Work Schedules?
Yes. Although this calculator is designed around four-day work weeks, you can use the working-days option for many other schedule changes.
For example, you could calculate salary changes when moving:
- From 5 days to 4 days
- From 5 days to 3 days
- From 6 days to 4 days
- From 40 hours to 32 hours
- From 37.5 hours to 30 hours
Gross Salary vs Take-Home Pay
This calculator estimates gross salary before income tax, payroll deductions, pension contributions, insurance or other deductions.
Your actual take-home pay may be different depending on your location, tax situation, benefits and payroll deductions.
Frequently Asked Questions
What is the prorated salary for working 4 days instead of 5?
If salary is reduced in direct proportion to working days, four days out of five equals 80%. Therefore, the prorated salary would normally be 80% of the original annual salary.
What is 80% of a $50,000 salary?
80% of $50,000 is $40,000.
What is 80% of a $60,000 salary?
80% of $60,000 is $48,000.
Do you get paid less on a 4 day work week?
It depends on the arrangement. Some employers prorate salary when weekly hours are reduced, while others maintain full salary or compress full-time hours into four longer days.
How do I calculate salary when reducing my hours?
Divide your new weekly hours by your previous weekly hours and multiply the result by your current annual salary.
Can I calculate a 32-hour work week salary?
Yes. Choose the weekly hours option, enter your existing weekly hours and then enter 32 as your new weekly hours.
Does this calculator include taxes?
No. The calculator estimates gross salary before tax and other payroll deductions.
Can I use euros or pounds instead of dollars?
Yes. You can select dollars, euros, pounds, Canadian dollars or Australian dollars. The prorating calculation is the same regardless of currency.