Mother and Baby

MAT B1 form: What is a maternity certificate and how to get one

Section: Work & maternity
How to get a MAT B1 form

A Mat B1 form - it’s your ticket to claim maternity pay from and benefits from your employer, but how exactly do you get your hands on it?

There’s so much to think about once you find out you’re pregnant – it’s tempting to skip the boring bit and plunge straight into planning babygros and buggies, but you do need to make sure your maternity leave and pay is set up. This involves getting the correct form from your midwife or GP.

What is a MAT B1 form? 

A MAT B1 form, or Maternity Certificate, is a form from the government that gives your employer medical evidence of your pregnancy and when your baby is due. 

How to get your MAT B1 form?

Although your midwife should automatically give you a MAT B1 form at the antenatal appointment that takes places after your 20-week scan, you may need to request it - it is available from either your midwife or your doctor.

Why do I need a MAT B1 form? 

You'll need a MAT B1 form in order to claim for maternity pay and benefits, whether you're unemployed, self-employed, full time or part-time. The form allows you to claim for Statutory Maternity Pay (SMP) from your employer. If you are self-employed, or you don't work, you will also need this certificate to claim for your 39-week Maternity Allowance from the government. 

In order to be eligible for Maternity Allowance, according to Gov UK, you will need to: 

  • Be employed but unable to claim for Statutory Maternity Pay (SMP)
  • Be self-employed and pay Class 2 National Insurance
  • Have stopped working recently 

When should I give my Maternity Certificate to my employer?

Once you receive your form, you’ll need to sign it, make a copy and then at some stage before you are 25 weeks pregnant (by the end of the 15th week before the beginning of your expected week of birth), you’ll need to give it to your employer, so either your boss or HR team. If you work two jobs, you'll need to give a copy of the MAT B1 form to both employers.

Once you've given it to your employer, you can start arranging you maternity pay and benefits. Remember you need to give your employer at least 28 days notice before you begin claiming your SMP, so it's a good idea to get this sorted sooner rather than later. 

That said, whilst it's tempting to share your exciting news with your colleagues right away, most people wait until after their 12-week-scan, when the risk of miscarriage is reduced. Bear in mind you can’t take time off for antenatal appointments until you’ve told your employer about your pregnancy.

What will my MAT B1 form look like? 

It's a pretty standard medical document, but here's what it looks like: 


What happens if I lose my MAT B1 form? 

If you do end up losing your MAT B1 form, you are able to apply for a duplicate, but this can take some time and hold things up. For this reason, we recommend making a copy as soon as you sign it and keeping it in a safe place before the baby-brain sets in! 

What else do I need to tell my employer when pregnant? 

Either in a letter or an email (check with your HR department for your company policy), you need to tell your boss your due date and the date you want to start your statutory maternity leave and pay.

Now read: 21 of the most mind-boggling baby names parents picked in 2017


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Yes, moo, as in the noise a cow makes. Seven girls and six boys in the US were named Moo in 2017. 
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There's enjoying an ice cold Fanta by the pool, and then there's the 24 sets of parents who each named their daughter Fanta last year. No words.
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Maybe she's born with it, maybe it's - oh wait, it is Maybelline. No maybe about it - 20 girls were named after this beauty brand last year. 
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There were 141 more Teslas in America as of last year - nope, not new cars, but 130 newborn girls and 11 newborn boys. 
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The Evian babies on the ad inspired 10 actual Evian babies in 2017. All boys. 
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Like a comfortable pair of jeans, Denim was a strangely popular choice among parents last year. 141 boys and 53 girls were named after the durable fabric. 
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Nine girls were given the royal treatment with this namesake. The mispelled version - Dutchess - went to 11 girls. 
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This common carp was almost equally common between boys and girls last year - 26 boys and 25 girls will carry this name with them forevermore. 
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The 17 boys called Havoc last year will likely be causing more havoc in a couple of years when they reach their tantrum stage. 
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'I'm Furious!' will take on a whole new meaning for the 10 children who'll take this name with them for the rest of their lives. 
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Slayer. Six boys. Need we say more. 
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Fifty one girls were named Isis last year. Yes, we know the name originally derives from mythology, but it's still likely to carry negative connotations.  
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Like Cheryl and Liam's Bear, this one is quite cute. For a baby. Paw thing. 
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'Any ideas for a name?' 'Give me a sec. Eureka!' 'That'll do.' Seven girls in 2017 were named this way. 
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Does what it says on the tin. Eight babyboys were called Babyboy last year. 
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See previous. Seven babygirls were named Babygirl in 2017. 
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Six boys. Nope, us neither. 
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From mythology, but also a popular American website. Twenty seven girls were called this last year. 
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As in Stalin. Seven boys were called this in 2017. 
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Ten girls were called Yoyo last year. Yoyay or yonay?
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Let's hope the 25 girls who were called Lemon last year don't have the surname Drizzle, Cake or Meringue. Just saying. 

Read next: 10 things you need to know about maternity pay 

Read next: Top maternity pay tips for self-employed mums-to-be 


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