Form SMP1 & MAT B1: Why I Cannot Pay You Statutory Maternity Pay (SMP Worksheet)
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JustFill prepares the SMP1 PDF worksheet; it is not affiliated with DWP, HMRC, or the NHS, does not issue MAT B1 medical certificates, and does not submit Maternity Allowance claims.JustFill is not affiliated with DWP (Department for Work and Pensions) & HMRC, United Kingdom. This is an independent third-party tool to help you complete Form SMP1. Always download the current blank form from the official source and verify your completed copy before signing or submitting. Official Form SMP1 from DWP (Department for Work and Pensions) & HMRC, United Kingdom
UK Form SMP1 ("Why I cannot pay you Statutory Maternity Pay") is the official DWP and HMRC form an employer must complete and give to a pregnant employee within 7 days of deciding she does not qualify for Statutory Maternity Pay (SMP) — for example because she has less than 26 weeks' continuous service by the Qualifying Week (15th week before the Expected Week of Childbirth) or her average weekly earnings are below the Lower Earnings Limit. The employer returns the employee's original MAT B1 maternity certificate together with the completed Form SMP1 so she can claim Maternity Allowance from DWP on Form MA1. Open an interactive SMP1 worksheet or upload your flat GOV.UK SMP1 PDF in JustFill to complete and download it free.
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Need to issue Form SMP1 to an employee who does not meet the 26-week service or earnings test for Statutory Maternity Pay, or received a flat SMP1 PDF alongside your MAT B1 certificate to claim Maternity Allowance? Just like Form SSP1 for sick pay, the official GOV.UK SMP1 form is distributed as a PDF that many HR teams and small businesses struggle to fill cleanly in standard browser viewers. JustFill detects every checkbox, date box, and earnings table on Form SMP1 so UK employers, payroll bureaus, and employees can complete it in the browser without printing and handwriting.
DWP publishes Form SMP1 on GOV.UK at gov.uk/government/publications/statutory-maternity-pay-employee-circumstances-that-affect-payment-smp1. Click "Fill the blank Form SMP1 now" above to open an interactive SMP1 worksheet in JustFill, or upload your flat GOV.UK SMP1 PDF to type all dates, Qualifying Week figures, and employer details on screen; your first clean completed download is included at no charge.
What each section of Form SMP1 asks for. JustFill’s AI will detect these fields automatically when you upload the PDF — review the breakdown below so you know what to enter.
Employee's surname, first name(s), National Insurance number, home address and postcode, Expected Date of Childbirth from the MAT B1 certificate, Sunday of the Expected Week of Childbirth (EWC), and the Qualifying Week (15th week before the EWC).
Tick-box reasons why SMP is not payable: not employed continuously for at least 26 weeks into the Qualifying Week, average weekly earnings in the 8-week relevant period below the Lower Earnings Limit (£125/week for 2025/26; check current April threshold), late notice without reasonable excuse, MAT B1 medical evidence not provided in time, or in legal custody.
Start and end dates of the 8-week relevant calculation period, gross pay paid in that period, and calculated average weekly earnings.
Employer name, address, postcode, telephone number, employer's signature, printed name, position, date, and confirmation that the employee's original MAT B1 certificate is being returned to her.
A fictional UK employee, Hannah Rose Example, joined Sample Retail Ltd 14 weeks before her Qualifying Week. Because she does not have 26 weeks' continuous service with Sample Retail Ltd by the Qualifying Week, HR completes Form SMP1 and returns her original MAT B1 certificate so she can claim Maternity Allowance from DWP.
EXAMPLE, HANNAH ROSE · NI No: QQ 12 34 56 C · Baby due date (MAT B1): 18 02 2027 · EWC begins: 14 02 2027 · Qualifying Week ends: 07 11 2026
Calculates the Sunday of the Expected Week of Childbirth and the 15th week before it (the Qualifying Week).
☑ Not employed by me for a continuous period of at least 26 weeks into the Qualifying Week (employment started 20 07 2026)
She meets the earnings test across her recent employment history for Maternity Allowance, but joined this specific employer after the 26-week cut-off for SMP.
Sample Retail Ltd, 50 Sample High St, Manchester, ZZ99 9ZZ · Original MAT B1 returned to employee · Signed 12 10 2026
The employer signs Part C and returns the original MAT B1 certificate with Form SMP1.
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Official source: Form SMP1 on DWP (Department for Work and Pensions) & HMRC, United Kingdom’s website
Edition checked: DWP Form SMP1 (Statutory Maternity Pay: why I cannot pay you SMP — current GOV.UK edition). Verified against the official source on · Verified in our Government Forms Fillability Study.
Contains public sector information licensed under the Open Government Licence v3.0.
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