Qualifying Period for Maternity Pay Calculator
Use this UK Statutory Maternity Pay calculator to estimate whether you meet the two core tests for SMP: continuous employment by the qualifying week and average weekly earnings at or above the Lower Earnings Limit. Enter your expected due date, employment start date, earnings, and tax year to get an instant estimate.
Calculate your maternity pay qualifying period
This tool estimates your qualifying week, latest eligible employment start date, and whether your average weekly earnings meet the current Lower Earnings Limit.
Your results will appear here
Complete all fields and click the button to calculate your qualifying period for maternity pay.
Expert guide to the qualifying period for maternity pay calculator
If you are expecting a baby and want to understand whether you are likely to qualify for Statutory Maternity Pay, a qualifying period for maternity pay calculator can save time and reduce uncertainty. In the UK, entitlement to SMP is based mainly on two practical tests: your length of continuous employment with your employer by the qualifying week, and whether your average weekly earnings are high enough to meet the Lower Earnings Limit for National Insurance purposes. The calculator above turns those rules into an instant estimate that is easier to understand than reading fragmented guidance on multiple pages.
The phrase qualifying period for maternity pay usually refers to the period used to decide whether an employee has been employed for long enough before the expected week of childbirth. This is not the same thing as the amount of time you can take off, and it is not the same as the number of weeks you will be paid. Instead, it is a legal eligibility checkpoint. Many people confuse the qualifying week with maternity leave start dates, payroll processing dates, or the due date itself. A good calculator separates these concepts clearly.
Key rule: to qualify for Statutory Maternity Pay in the UK, an employee normally must have been continuously employed by the same employer for at least 26 weeks up to and including the qualifying week, which is the 15th week before the expected week of childbirth. They must also have average weekly earnings at or above the Lower Earnings Limit.
How the calculator works
This calculator uses the core UK SMP framework. First, it identifies your expected week of childbirth from the due date you enter. In most payroll guidance, that week runs from Sunday to Saturday. The tool then counts back 15 weeks to find the qualifying week. Once it knows the qualifying week, it calculates the latest employment start date that would still allow you to complete 26 weeks of continuous employment by that week.
Next, the calculator checks the average weekly earnings figure you entered against the selected Lower Earnings Limit. If both the employment test and the earnings test are passed, the result will show that you are likely to qualify for Statutory Maternity Pay, subject to final payroll confirmation and any additional circumstances that may affect entitlement.
The 4 inputs that matter most
- Expected due date: this anchors the entire timeline and determines the expected week of childbirth.
- Employment start date: this is used to test whether you had enough continuous service by the qualifying week.
- Average weekly earnings: your earnings in the relevant period must meet or exceed the Lower Earnings Limit.
- Tax year threshold: the Lower Earnings Limit changes over time, so the correct year matters.
Understanding the qualifying week in plain English
The qualifying week is often the most misunderstood part of maternity pay eligibility. It is not the week you go on leave and it is not the week you tell your employer you are pregnant. It is the 15th week before the week your baby is due. This makes it an early checkpoint in pregnancy, which is why many people are surprised to learn they may need to have started their job quite a long time before their due date in order to qualify.
For example, if your baby is due in mid December, your qualifying week may fall around late August or early September depending on the exact date. Your employer will look at whether your employment was continuous up to and including that week. If you started after the latest qualifying start date, you may not qualify for SMP through that employer, even if you will have worked there for several months by the time maternity leave actually begins.
Why continuous employment matters
Continuous employment means there has not been a break that interrupts your employment relationship for SMP purposes. In straightforward cases this is easy: you started work, remained employed, and are still employed into the qualifying week. In more complex situations, such as TUPE transfers, irregular contracts, or periods away from work, payroll and HR should confirm how continuity applies. A calculator gives a good estimate, but specialist advice is important if your work history is unusual.
Lower Earnings Limit and why your wages matter
Even if you have worked long enough, you also need average weekly earnings at or above the Lower Earnings Limit. This threshold is linked to National Insurance rules and can change from one tax year to the next. If your earnings are below the threshold, you may not qualify for SMP from your employer. However, some people in that situation can still qualify for Maternity Allowance, so a failed earnings test does not always mean there is no support available.
Average weekly earnings are not always the same as your normal weekly wage. Employers usually assess them over a relevant period tied to your payday schedule. If you are paid weekly, fortnightly, four weekly, or monthly, the exact dates used can differ. That is why this calculator asks for your average weekly earnings as a single figure. If you are unsure what number to use, ask payroll to confirm your average weekly earnings for SMP purposes.
Official UK maternity pay figures you should know
Below is a comparison of recent official statutory figures commonly used when checking maternity pay eligibility and payment planning. These are real government figures and are useful when comparing years or reviewing historic payroll decisions.
| Tax year | Lower Earnings Limit | Standard SMP weekly rate | First 6 weeks of SMP |
|---|---|---|---|
| 2024 to 2025 | £123 per week | £184.03 per week | 90% of average weekly earnings |
| 2025 to 2026 | £125 per week | £187.18 per week | 90% of average weekly earnings |
These figures highlight two important facts. First, the Lower Earnings Limit is relatively modest compared with typical full time wages, so many employees pass the earnings test if they have regular earnings. Second, actual maternity pay during the first 6 weeks is not the standard SMP rate. It is usually 90% of average weekly earnings, which means higher earners often receive more than the standard rate at the start of their maternity pay period before dropping to the standard rate or 90% of earnings if lower.
SMP payment structure at a glance
Another area of confusion is the difference between eligibility and payment structure. Qualifying for SMP does not mean receiving one flat amount for the whole period. In most cases, the statutory payment pattern is split into two phases as shown below.
| Payment phase | Duration | How it is calculated | What this means in practice |
|---|---|---|---|
| Initial SMP period | 6 weeks | 90% of average weekly earnings | If you earn more, this phase can be notably above the standard SMP rate. |
| Remaining SMP period | 33 weeks | Lower of 90% of average weekly earnings or the standard statutory rate | Most employees move to the statutory flat rate after the first 6 weeks. |
| Total statutory pay duration | 39 weeks | 6 weeks plus 33 weeks | This is separate from the full maternity leave entitlement, which can be longer. |
When this calculator is especially useful
- You recently changed jobs and want to know if your new employment started early enough.
- You are close to the Lower Earnings Limit and need a quick estimate before speaking to payroll.
- You are comparing SMP with possible Maternity Allowance entitlement.
- You want to understand your timeline before formally notifying your employer.
- You work variable hours and need a practical way to sense check eligibility.
Common scenarios and what they usually mean
1. You pass the service test but fail the earnings test
This often happens with low hours, part time work, or inconsistent earnings. In this case you may not qualify for SMP from your employer, but you should check whether you can claim Maternity Allowance instead. This is particularly relevant if you have worked but your earnings are below the Lower Earnings Limit.
2. You meet the earnings threshold but started work too late
This is common after changing jobs during pregnancy. Even if your wages are comfortably above the threshold, SMP can still fail if you were not employed early enough to complete 26 weeks of continuous service by the qualifying week.
3. You have a complex employment history
If your employer changed due to a transfer, acquisition, payroll consolidation, or another business restructure, your continuity of employment may still count. In these cases, rely on your HR team and official guidance rather than a calculator alone.
Step by step: how to use this maternity pay calculator properly
- Enter your expected due date from your MATB1 or medical advice.
- Enter the date your continuous employment with your employer started.
- Add your average weekly earnings figure or the best payroll estimate you have.
- Select the tax year threshold that applies.
- Click the calculate button and review the qualifying week dates, latest eligible start date, and pass or fail checks.
- If you are close to the threshold, speak to payroll because exact earnings assessment periods can affect the outcome.
Authoritative sources for checking your entitlement
If you want to verify the rules used in this calculator, start with official government guidance. The most helpful sources include the UK government page on Statutory Maternity Pay eligibility, the detailed HMRC employer guide on maternity benefits technical guidance, and the official rate and threshold updates published at GOV.UK employer maternity pay guidance. These sources are especially useful if your circumstances involve irregular pay periods, payroll adjustments, or continuity questions.
Important limitations of any calculator
No maternity pay calculator can replace your employer’s legal payroll assessment. The reason is simple: actual entitlement may depend on details this type of public calculator does not collect, such as exact payday timing, how average weekly earnings are assessed, whether there were breaks in service, whether your contract changed, or whether your case involves statutory exceptions. For most standard employee situations, however, a calculator is still very effective for estimating whether you are likely to qualify.
You should also remember that Statutory Maternity Pay is only one part of the wider maternity rights framework. You may still have rights to maternity leave, time off for antenatal appointments, and protection from unfair treatment at work. Some employers also offer enhanced maternity pay on top of statutory minimums, and those enhanced terms can have different service rules than the statutory baseline.
Final takeaways
The best way to think about the qualifying period for maternity pay is as an early checkpoint based on your due date. Once you know your expected week of childbirth, everything else falls into place: the qualifying week, the latest employment start date to satisfy the 26 week service test, and the point at which your earnings threshold becomes decisive. A well built qualifying period for maternity pay calculator turns those rules into a simple timeline you can actually use.
If the calculator shows that you pass both checks, that is a strong sign you may qualify for SMP. If one of the checks fails, do not assume there is no support available. Review your payroll details, confirm the correct average weekly earnings figure, and check whether Maternity Allowance may apply. In short, use the calculator for speed and clarity, then use official guidance and payroll confirmation for final certainty.