Stat Mat Pay Calculator

Introduction & Importance of Statutory Maternity Pay

Statutory Maternity Pay (SMP) is a crucial financial support system for working mothers in the UK, designed to provide income during the period when they take time off work to have and care for their new baby. Understanding how SMP works, who qualifies, and how much you’re entitled to receive can significantly impact your financial planning during this important life transition.

The SMP calculator on this page helps you determine exactly how much statutory maternity pay you’re eligible to receive based on your individual circumstances. This tool considers your average weekly earnings, employment status, and other key factors to provide an accurate estimate of your maternity pay entitlements.

Why SMP Matters for New Parents

Becoming a parent is one of life’s most significant events, but it also comes with financial considerations. SMP provides:

• Financial security during your maternity leave period
• Time to recover from childbirth without work pressures
• Opportunity to bond with your newborn in the crucial early weeks
• Protection of your employment rights during your leave

According to the UK Government’s official guidance, SMP is paid for up to 39 weeks, with the amount depending on your average weekly earnings and length of service with your employer.

How to Use This Statutory Maternity Pay Calculator

Our SMP calculator is designed to be simple yet comprehensive. Follow these steps to get an accurate estimate of your maternity pay:

1. Enter your average weekly earnings

   Input your gross weekly wage (before tax and National Insurance deductions). This should be your average earnings over the 8 weeks (if paid weekly) or 2 months (if paid monthly) up to the 15th week before your baby is due.

2. Select your employment status

   Choose whether you’re an employee or self-employed. Note that self-employed individuals may qualify for Maternity Allowance instead of SMP.

3. Provide your baby’s due date

   This helps calculate your qualification period and when your maternity leave can start.

4. Indicate your planned maternity leave start date

   The earliest you can start your leave is 11 weeks before your due date. Most women start their leave between 4-6 weeks before their due date.

5. Answer if you’ve had a child in the last 12 months

   This affects your eligibility as there are special rules if you’ve recently had another child.

6. Click “Calculate Your SMP”

   The calculator will instantly display your estimated SMP entitlements, including the weekly amount and total payment over 39 weeks.

SMP Formula & Calculation Methodology

The statutory maternity pay calculation follows specific rules set by UK law. Here’s how our calculator determines your entitlements:

Eligibility Criteria

To qualify for SMP, you must:

• Be an employee (not self-employed or a worker)
• Have given your employer the correct notice
• Have been continuously employed for at least 26 weeks up to the ‘qualifying week’ (the 15th week before your due date)
• Earn at least £123 per week (the Lower Earnings Limit for National Insurance) on average

Payment Structure

SMP is paid as follows:

1. First 6 weeks:

   90% of your average weekly earnings (with no upper limit)

2. Next 33 weeks:

   The lower of either:

   • £172.48 per week (2024/25 rate), or
   • 90% of your average weekly earnings

Calculation Example

For someone earning £500 per week:

• First 6 weeks: £450 per week (90% of £500)
• Next 33 weeks: £172.48 per week (the standard rate)
• Total SMP: (6 × £450) + (33 × £172.48) = £2,700 + £5,691.84 = £8,391.84

The calculator also considers:

• Your exact qualification period
• Whether you’ve had a recent pregnancy (affecting the 8-week averaging period)
• Your planned leave start date (affecting when payments begin)

For the most current rates and detailed rules, consult the official government SMP page.

Real-World SMP Calculation Examples

Let’s examine three different scenarios to illustrate how SMP calculations work in practice:

Example 1: Full-Time Employee on £30,000 Annual Salary

Details: Sarah earns £30,000 per year (£576.92 per week), has worked for her employer for 3 years, and is due on 15 March 2025. She plans to start her leave on 1 February 2025.

Calculation:

• Average weekly earnings: £576.92 (well above the £123 threshold)
• First 6 weeks: 90% of £576.92 = £519.23 per week
• Next 33 weeks: £172.48 per week (standard rate)
• Total SMP: (6 × £519.23) + (33 × £172.48) = £3,115.38 + £5,691.84 = £8,807.22

Key Points: Sarah receives her full salary equivalent for the first 6 weeks, then drops to the standard rate. Her total SMP is significantly higher than someone earning just above the threshold.

Example 2: Part-Time Worker on £15,000 Annual Salary

Details: Emma works 25 hours per week earning £15,000 annually (£288.46 per week). She’s been with her employer for 18 months and is due on 10 July 2024.

Calculation:

• Average weekly earnings: £288.46
• First 6 weeks: 90% of £288.46 = £259.61 per week
• Next 33 weeks: £172.48 per week (standard rate is lower than 90% of her salary)
• Total SMP: (6 × £259.61) + (33 × £172.48) = £1,557.66 + £5,691.84 = £7,249.50

Key Points: Emma’s SMP drops to the standard rate after 6 weeks because £172.48 is less than 90% of her average earnings. She still receives substantial support relative to her normal income.

Example 3: Low Earner Near the Threshold

Details: Chloe earns £130 per week, has worked for her employer for 2 years, and is due on 5 November 2024.

Calculation:

• Average weekly earnings: £130 (just above the £123 threshold)
• First 6 weeks: 90% of £130 = £117 per week
• Next 33 weeks: £117 per week (90% of her earnings is less than the standard rate)
• Total SMP: (6 × £117) + (33 × £117) = £702 + £3,861 = £4,563

Key Points: Chloe’s entire SMP is calculated at 90% of her earnings because this amount is less than the standard £172.48 rate. This ensures low earners receive proportionally more support relative to their normal income.

SMP Data & Statistics: How You Compare

The following tables provide context for how your SMP entitlements compare to national averages and different income brackets.

Table 1: SMP Entitlements by Income Bracket (2024/25)

Annual Salary	Weekly Earnings	First 6 Weeks (90%)	Next 33 Weeks	Total SMP	% of Normal Pay
£20,000	£384.62	£346.16	£172.48	£7,404.48	37.0%
£30,000	£576.92	£519.23	£172.48	£8,807.22	29.4%
£40,000	£769.23	£692.31	£172.48	£10,210.96	25.5%
£50,000	£961.54	£865.39	£172.48	£11,614.70	23.2%
£15,000	£288.46	£259.61	£172.48	£7,249.50	48.3%

Source: Calculations based on GOV.UK statistics

Table 2: SMP Uptake and Demographic Data (2023)

Metric	Figure	Notes
% of eligible mothers claiming SMP	92%	Up from 89% in 2020
Average weekly SMP received	£151.20	Below the £172.48 maximum due to many earning less
% receiving full 39 weeks	78%	Some return to work early or switch to unpaid leave
Average age of SMP claimants	31 years	Median age at first birth in UK is 30.7 years
% in professional/managerial roles	42%	Higher than the 36% overall female workforce figure
Regional variation (highest)	London (£168 avg)	Reflects higher average salaries
Regional variation (lowest)	North East (£132 avg)	Correlates with lower average earnings

Data from Office for National Statistics

Key Insights from the Data

• SMP replaces a higher percentage of income for lower earners (48.3% for £15k salary vs 23.2% for £50k)
• The average SMP received is below the maximum rate, indicating many women earn less than the threshold where the standard rate applies
• Regional disparities in SMP reflect broader economic inequalities across the UK
• Professional women are slightly overrepresented in SMP claims, possibly due to better awareness of entitlements

Expert Tips to Maximize Your SMP Entitlements

Navigating the SMP system can be complex. These expert tips will help you get the most from your maternity pay:

Before Your Maternity Leave

1. Check your qualification period

   The 15th week before your due date is crucial. Ensure you’ve been employed continuously for 26 weeks by this point. If you’re close to the threshold, discuss options with your employer.

2. Understand the 8-week averaging period

   Your SMP is calculated based on earnings during the “relevant period” (typically 8 weeks for weekly-paid or 2 months for monthly-paid employees ending in the qualifying week). Time overtime or bonuses to fall within this period if possible.

3. Confirm your leave start date

   You can start leave from 11 weeks before your due date. Starting later means more time with full pay before SMP begins. However, SMP starts automatically if you’re off work for a pregnancy-related illness in the 4 weeks before your due date.

4. Check your contract for occupational maternity pay

   Many employers offer enhanced maternity pay above the statutory minimum. This might include:

   • Full pay for a certain period (commonly 4-12 weeks)
   • Gradual return to work provisions
   • Flexible working options post-maternity leave

During Your Maternity Leave

5. Keep in touch (KIT) days

   You can work up to 10 KIT days during your maternity leave without losing SMP. These can be useful for training or gradual return to work. Each day is paid at your normal rate.

6. Claim other benefits you’re entitled to

   SMP might affect other benefits. Use the benefits calculator to check entitlements to:

   • Sure Start Maternity Grant (£500 one-off payment)
   • Universal Credit or Tax Credits
   • Healthy Start vouchers

7. Plan your return to work

   You have the right to return to the same job if you take 26 weeks or less of leave. For longer leave, you’re entitled to a similar role. Give 8 weeks’ notice if returning early.

If You’re Not Eligible for SMP

• Maternity Allowance: If you don’t qualify for SMP (e.g., self-employed or recent starter), you may get Maternity Allowance of £172.48 per week for 39 weeks.
• Contractual pay: Some employers offer maternity pay even if you don’t qualify for SMP. Always check your contract.
• Alternative support: Explore other benefits like Income Support or Employment and Support Allowance if you’re not working.

Common Pitfalls to Avoid

• Missing the notification deadline: You must tell your employer at least 15 weeks before your due date (or as soon as possible).
• Assuming you’re not eligible: Even part-time or temporary workers may qualify if they meet the criteria.
• Not checking pay slips: SMP is taxable and subject to National Insurance. Verify deductions are correct.
• Forgetting about pension contributions: Your employer must continue pension contributions based on your SMP during leave.

Interactive SMP FAQ

When should I tell my employer I’m pregnant to qualify for SMP?

You should notify your employer by the end of the 15th week before your expected week of childbirth (the “qualifying week”). This is typically around the 6th month of pregnancy. While you can tell them earlier, this is the legal deadline to qualify for SMP.

Your notification should include:

• Your due date (using form MATB1 from your midwife/doctor)
• When you want to start your maternity leave

Many women choose to inform their employer earlier (around 12 weeks) to allow for workplace adjustments and planning.

Can I get SMP if I’m self-employed or a freelancer?

No, SMP is only available to employees. However, if you’re self-employed or have recently stopped working, you may qualify for Maternity Allowance instead. This pays:

• £172.48 per week or 90% of your average weekly earnings (whichever is less)
• For up to 39 weeks

To qualify for Maternity Allowance, you typically need to have:

• Been self-employed for at least 26 weeks in the 66 weeks before your due date
• Earned at least £30 per week in 13 of those weeks

Apply through GOV.UK Maternity Allowance service.

How is SMP taxed? Will it affect my tax code?

Yes, SMP is subject to:

• Income Tax (deducted via PAYE like normal salary)
• National Insurance contributions (if you earn enough)

Your tax code may be adjusted during your maternity leave to account for the lower income. HMRC will typically:

• Use a cumulative tax code to ensure you don’t overpay tax
• Adjust your personal allowance if you’re on a higher income

Important points:

• You’ll receive a P45 when your SMP ends if you don’t return to work
• If you return to work, your tax code will be recalculated based on your new salary
• SMP counts as earnings for tax credit purposes

Use the GOV.UK tax calculator to estimate your take-home pay during maternity leave.

What happens if my baby is born early or late?

Your SMP isn’t affected by whether your baby arrives early or late, but the timing of payments might change:

If your baby is born early:

• Your maternity leave and SMP start automatically the day after birth
• Any SMP you’ve already received for planned leave before the birth will count towards your 39 weeks

If your baby is born late:

• Your SMP start date remains as planned
• You’ll continue to receive SMP until 39 weeks after your planned start date, even if this is after your baby is born

If your baby is stillborn:

You’re still entitled to full SMP if your baby is born after 24 weeks of pregnancy. For births before 24 weeks, you may qualify for other benefits but not SMP.

In all cases, your total SMP entitlement remains 39 weeks (or less if you return to work early). The Miscarriage Association provides support for early births.

Can I work while receiving SMP? Will it affect my payments?

You can work during your maternity leave without losing SMP in these specific circumstances:

Keep In Touch (KIT) Days:

• You can work up to 10 KIT days without losing SMP
• These can be single days or multiple hours that add up to a full day
• You’ll be paid your normal wage for KIT days in addition to SMP
• Common uses: training, meetings, or gradual return to work

Returning to Work Early:

• If you return to work before your 39 weeks of SMP are complete, your SMP stops
• You must give 8 weeks’ notice if returning early
• Some employers allow phased returns with reduced hours while still receiving partial SMP

Other Work:

• Working for another employer while receiving SMP may affect your entitlement
• You must not be “gainfully employed” by another employer during SMP periods
• Self-employed work is generally allowed unless it’s substantial

Always check with your employer before undertaking any work during maternity leave, as policies vary. The ACAS website provides detailed guidance on working during maternity leave.

What if I change jobs while pregnant? Will I still get SMP?

Changing jobs while pregnant can affect your SMP entitlement. Here’s what you need to know:

If you change jobs BEFORE the qualifying week (15th week before due date):

• You’ll need to have worked for your new employer for at least 26 weeks by the qualifying week to get SMP from them
• If you don’t meet this requirement, you may qualify for Maternity Allowance instead

If you change jobs AFTER the qualifying week:

• Your previous employer remains responsible for paying your SMP
• They must pay you SMP even if you no longer work for them
• You should notify both employers about your pregnancy and leave plans

Special Cases:

• Redundancy: If made redundant during pregnancy, you’re still entitled to SMP
• Fixed-term contracts: If your contract ends during pregnancy, you may still qualify if you would have reached 26 weeks
• Agency workers: May qualify if they’ve worked for the same employer for 26 weeks

Always get confirmation in writing about your SMP entitlements when changing jobs. The Citizens Advice website offers detailed guidance on this situation.

How does SMP affect my pension contributions?

Your pension rights are protected during maternity leave:

Employer Contributions:

• Your employer must continue making pension contributions based on your SMP
• These are calculated as if you were receiving your normal salary
• This applies for the entire 39 weeks of SMP (or 52 weeks if you take additional leave)

Your Contributions:

• Your own pension contributions are based on your actual SMP payments
• This means you’ll pay less into your pension during leave
• You can choose to make up the difference with voluntary contributions

State Pension:

• Receiving SMP counts as National Insurance credits
• This protects your State Pension entitlement
• You don’t need to pay National Insurance on SMP to get these credits

Important Actions:

• Check your pension statements during and after maternity leave
• Consider increasing contributions when you return to work to make up any shortfall
• Consult your pension provider about any specific scheme rules

The MoneyHelper service provides excellent guidance on pensions during maternity leave.