Can AI calculate Statutory Maternity Pay?

Partly. AI can apply the arithmetic and produce a transparent calculation from complete payroll records and current GOV.UK figures, but a payroll adviser should check eligibility, unusual facts and the final payroll entry.

Is AI accurate for Statutory Maternity Pay?

It can be accurate for a standard case when you provide the correct earnings period and current statutory guidance. It can use the wrong rate, period or eligibility assumption when the records are incomplete, so the employer must verify the result.

What information does AI need to calculate Statutory Maternity Pay?

It needs the employee's expected week of childbirth, employment start date, intended maternity leave date, pay frequency and relevant gross pay and qualifying earnings records. It also needs current GOV.UK rules and figures, plus details of any variable pay, sickness, dismissal or previous relevant leave.

Do I need an accountant to calculate Statutory Maternity Pay?

Not for every straightforward case, if a competent payroll process checks the records and current GOV.UK guidance. For an unusual or disputed case, ask a payroll adviser or accountant to check it before payment; this is not professional advice.

PARTLY

As of 13 August 2026, AI can only partly calculate Statutory Maternity Pay.

This still needs a person who signs their name to it.

Can you do it?

15 minutesto a draft.

30 minutesto something you’d act on.

Cost, all in£0

Skill neededchat-fluent

Who has to check ita professional

What the alternative costsA payroll adviser or accountant is the alternative, but no price is supplied in the available tool data.

If this goes wrong: the employer underpays or overpays an employee and must correct payroll and explain the error.

What to actually do

Hand it to a person
The route this page recommends
Someone with a licence or accountable authority has to sign this before it counts.
Use a tool built for this
Second choice

Do it yourself

The distant third

A chat interface, chat-fluent skill, and roughly 30 minutes until you can act on the result.

How to actually do it

Open the GOV.UK guidance for Statutory Maternity Pay for employers and copy the relevant eligibility rules, calculation method and current statutory figures into a working document.
Gather the employee's expected week of childbirth, employment start date, intended maternity leave date, pay frequency and any facts about variable pay, sickness, dismissal or previous relevant leave.
Export the relevant payroll records and paste the pay-period dates, gross pay and qualifying earnings figures into the prompt without unnecessary personal identifiers.
Paste the current GOV.UK extracts into the prompt and ask the model to calculate each pay period, show the formulas and list missing or inconsistent information.
Compare the model's eligibility findings, earnings period, statutory figures and pay-period amounts against the GOV.UK guidance and the original payroll records.
Send the calculation, source extracts and supporting payroll records to a payroll adviser or accountant for a check before entering SMP into payroll.

Prompt

Calculate UK Statutory Maternity Pay for the employee described below. Use only the current GOV.UK SMP guidance and statutory figures pasted after the employee details. Do not guess, fill gaps or use an unverified rate. First list the eligibility and calculation inputs you found, then identify anything missing or inconsistent. Next show the relevant average weekly earnings calculation, the SMP calculation by pay period, the total expected SMP, and how it should appear in payroll. State which figures are statutory and which come from the employee's payroll records. If the facts describe an unusual case, such as variable pay, irregular pay dates, employment changes, linked employments, dismissal, sickness, or an earlier maternity or family leave period, stop and explain why a payroll adviser should check it rather than forcing a calculation. Show every formula in plain English and preserve the employee's pay frequency. Do not provide general tax advice. Finish with a checklist of documents and GOV.UK points that a payroll professional must verify before payment.

Employee and employment details:
[Paste the employee's expected week of childbirth, employment start date, intended maternity leave date, pay frequency, and any relevant employment or leave facts. Do not include unnecessary personal identifiers.]

Payroll records:
[Paste the relevant pay-period dates, gross pay figures, qualifying earnings details, and any relevant statutory or contractual payments.]

Current GOV.UK guidance and statutory figures:
[Paste the relevant current GOV.UK guidance and rates, including the page title and access date.]

Open it prefilled in ChatGPT or Claude, or copy it into Gemini, which takes no prefill link.

What it gets wrong

AI cannot establish an employee's eligibility when the employment history or pay records are incomplete.
AI cannot know whether an unusual payment, absence or employment change has been treated correctly without payroll context.
AI cannot guarantee that its statutory figures are current unless you supply the current GOV.UK guidance.
AI cannot take responsibility for correcting an underpayment, overpayment or payroll reporting error.
AI cannot replace the payroll professional's judgement where the facts do not fit the standard calculation.

What caps this at PARTLY: legal accountability, verification cost and judgement under ambiguity.

How we scored this

Five axes, each scored nought to two by hand: ten means AI carries the task cleanly, and the thresholds that turn a total into YES, PARTLY or NO are published in the methodology. Each axis name links to its definition.

Axis	Score (0–2)
Output	2
Inputs	1
Verification	1
Liability	1
Effort delta	2
Total	7 / 10

The methodology and its thresholds are published in full.

FAQ

Can AI calculate Statutory Maternity Pay?: Partly. AI can apply the arithmetic and produce a transparent calculation from complete payroll records and current GOV.UK figures, but a payroll adviser should check eligibility, unusual facts and the final payroll entry.
Is AI accurate for Statutory Maternity Pay?: It can be accurate for a standard case when you provide the correct earnings period and current statutory guidance. It can use the wrong rate, period or eligibility assumption when the records are incomplete, so the employer must verify the result.
What information does AI need to calculate Statutory Maternity Pay?: It needs the employee's expected week of childbirth, employment start date, intended maternity leave date, pay frequency and relevant gross pay and qualifying earnings records. It also needs current GOV.UK rules and figures, plus details of any variable pay, sickness, dismissal or previous relevant leave.
Do I need an accountant to calculate Statutory Maternity Pay?: Not for every straightforward case, if a competent payroll process checks the records and current GOV.UK guidance. For an unusual or disputed case, ask a payroll adviser or accountant to check it before payment; this is not professional advice.

Nearby answers

All Payroll rulings

Assessed by gpt-5.6-luna (gpt-5.6-luna) on 2026-08-13, second-checked by an independent model. Wrong somewhere? Email [email protected] and it gets re-checked.

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