Piece Rate / Output Pay Calculator
Check whether your piece rate pay meets National Minimum Wage, or calculate the legally required minimum rate per piece under the HMRC fair piece rate formula — including the 120% multiplier.
Statutory Fair Piece Rate (120% Formula)
£0.763 / item
Your Piece Rate
£0.800
Fair Min Rate
£0.763
Your Hourly Pay
£16.00/hr
NMW Minimum
£12.71/hr
HMRC "Fair Piece Rate" Rules (NMWM03140):
- The 120% Multiplier: By law, the fair rate is calculated as:
(NMW Rate ÷ Mean Output per Hour) × 1.2. - Written Notice: The employer must provide written notice explaining the mean hourly output test before you begin work.
- Invalid Test Protection: If the employer fails to conduct a valid rated output test, you are legally entitled to standard minimum wage (£12.71/hr) for every hour worked.
What Is Output / Piece Rate Work?
Output work (also known as piece work or piece rate pay) is one of four recognised types of work for NMW purposes. A worker is on output work when their pay is determined by the number of pieces produced, tasks completed, or items processed — rather than by the hours they work.
Common examples include: fruit and vegetable picking, packing and assembly line work, garment manufacture and sewing, data entry at a per-record rate, and some types of driving or delivery work paid per drop.
Key rule: Regardless of how many pieces you produce, your total earnings for any pay reference period must equal at least NMW multiplied by the number of hours you worked. If your piece rate is too low to achieve this, your employer must make up the difference.
The 120% Multiplier Explained
When an employer sets a fair piece rate, they use the average output from a rated output test as the benchmark. However, they must then multiply that baseline by 1.2 (120%) before dividing into the NMW rate. This produces a fair piece rate that is 20% higher than what is strictly necessary for an average worker.
The effect is that a worker only needs to reach 83.3% of average output (100 ÷ 120 = 0.833) to earn NMW. Workers who are naturally slower, who are learning, or who have a health condition are protected from falling below the legal minimum simply because they cannot keep pace with the average.
Average output
100%
Used in rated output test
Fair piece rate set at
120%
NMW ÷ (pieces/hr × 1.2)
Minimum to earn NMW
83.3%
Slower workers protected
The Rated Output Test — Employer Obligations
Before setting a piece rate, employers must establish the average number of pieces a worker can produce per hour when working at a normal, sustainable pace. This is known as the rated output test and is a legal requirement under the National Minimum Wage Regulations 2015.
- The test must measure a typical worker's average output, not the fastest or slowest.
- As an alternative to a formal test, the employer and worker may agree on an average output figure — but both parties must genuinely agree.
- The employer must keep records of the test and be able to demonstrate to HMRC that the piece rate was set correctly.
- If no rated output test has been conducted, the employer cannot set a lawful fair piece rate and may be in breach of NMW law.
April 2026 National Minimum Wage Rates
| Age Band | Hourly Rate | Fair rate @ 10 pieces/hr |
|---|---|---|
| 21 and over (National Living Wage) | £12.71 | £1.525 |
| 18 to 20 | £10.85 | £1.302 |
| Under 18 (school leaving age+) | £8.00 | £0.960 |
| Apprentice (year 1 or under 19) | £8.00 | £0.960 |
Example fair piece rate shown for 10 pieces/hour: (NMW × 1.2) ÷ 10. Rates effective from 1 April 2026, verified via GOV.UK.
Frequently Asked Questions
About this guide
This calculator is maintained by UKMinimumWage.co.uk using published GOV.UK rates for 2026/27. Last updated October 2026. This site is not HMRC-endorsed.