PARTLY

As of 13 August 2026, AI can only partly calculate workplace pension contributions.

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

Can you do it?

5 minutesto a draft.

30 minutesto something you’d act on.

Cost, all in£0

Skill neededpower-user

Who has to check ita professional

What the alternative costsA payroll accountant or payroll software can perform or check the calculation, but no alternative price is stated here.

If this goes wrong: employees may be underpaid or overpaid and the employer may need to correct payroll records and pension payments.

What to actually do

  1. Hand it to a person

    The route this page recommends

    Someone with a licence or accountable authority has to sign this before it counts.

  2. Use a tool built for this

    Second choice

  3. Do it yourself

    The distant third

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

    How to actually do it

    1. Open the pension scheme's current employer guide and the payroll period records, then gather each employee's gross pay, pensionable pay, eligibility status, contribution rate and any salary sacrifice or tax relief details.
    2. Copy the scheme rules into a separate document and mark the definitions for pensionable pay, qualifying earnings, contribution rates, rounding and payment timing.
    3. Open a spreadsheet and create one row per employee with the payroll figures and scheme inputs, keeping employee names or identifiers to the minimum needed.
    4. Paste the payroll data and scheme rules into a chatbot with the supplied prompt, then ask it to show employee and employer calculations in a table.
    5. Recalculate several rows in the spreadsheet using the scheme's stated basis and compare the totals, rounding and deductions with the chatbot's table.
    6. Give the checked table and the source scheme rules to your payroll administrator, payroll bureau or accountant before submitting deductions or pension payments.

    Prompt

    Calculate UK workplace pension contributions for the payroll data below. Use only the figures and scheme rules I provide, and do not invent missing values. First state the assumptions you need me to confirm, including the pay period, tax year, pensionable pay definition, qualifying earnings basis, employee eligibility, contribution rates, salary sacrifice, tax relief method and rounding rules. Then calculate each employee's contribution and the employer's contribution, showing the calculation line by line and separating gross pay, pensionable pay, employee deduction and employer payment. Flag any employee or rule you cannot calculate reliably. Produce a table suitable for checking against payroll. Do not give legal or professional advice, and do not present an uncertain result as final.

Payroll data:
[Paste employee identifiers, pay period, gross pay and relevant deductions here]

Pension scheme rules:
[Paste the scheme contribution rates, pensionable pay definition, qualifying earnings details, tax relief method, rounding rules and any scheme-specific instructions here]

Employer instructions:
[Paste the required output format and any confirmed assumptions here]

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

What it gets wrong

What caps this at PARTLY: legal accountability, verification cost and context depth.

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.

AxisScore (0–2)
Output2
Inputs1
Verification1
Liability1
Effort delta2
Total7 / 10

The methodology and its thresholds are published in full.

FAQ

Can ChatGPT calculate workplace pension contributions?
Partly. It can calculate the figures from complete payroll data and the pension scheme rules, but you must confirm the earnings basis, eligibility, rates and rounding before using the result. This is not professional advice; a serious or unusual case needs a payroll specialist or accountant.
What information does AI need to calculate pension contributions?
Give it the pay period, each employee's gross and pensionable pay, eligibility status, contribution rates, qualifying earnings basis, tax relief method, salary sacrifice details and rounding rules. Include the scheme's employer guide rather than relying on the model to remember the rules.
Can AI calculate employer and employee pension contributions?
Yes, when the contribution basis and rates are supplied clearly. It can show the employee deduction and employer payment, but you should recalculate sample rows and have payroll staff or an accountant check the final table.
Is it safe to use AI for payroll pension calculations?
It is suitable for a draft calculation, not as the sole control over payroll. Errors can affect employee pay and pension payments, so compare the result with the scheme rules and payroll records before processing it.

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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