Information needed to put an employee on payroll

Putting an employee on payroll requires accurate identity, employment, pay and tax information gathered through a secure process. Obtain the relevant P45 or starter information and confirm the contract details before calculating the first payment.

Check spelling, dates, pay frequency and bank details through an approved process. A National Insurance number is payroll information, not proof of permission to work.

Collect information through one controlled process

Give the new employee a clear request explaining which details are needed, how to provide them and the deadline for the first payroll. Use a secure form or agreed transfer method rather than a group email containing identity and bank information. Ask HR to confirm the employment start date and contractual pay separately, so payroll can distinguish facts supplied by the employee from terms authorised by the employer.

HMRC's starter guidance identifies information needed to set up the employee, including the relevant P45 details or starter checklist. Follow that process for the person's circumstances and current tax year. Do not guess previous earnings, tax paid or a declaration because the employee has not yet responded. Missing information should be visible as an outstanding task with a named person responsible for following it up. ^[1]

Check names and dates carefully

Use the employee's full legal name in the payroll record and retain any preferred name separately where the system permits. Check date formats and the actual start date against the employment instructions. A transposed date or abbreviated name can cause avoidable matching problems. Where the employee's documents differ, ask for clarification through the proper process rather than silently choosing the version that fits an existing spreadsheet.

Record the National Insurance number if available and follow the appropriate guidance if it is not. Do not construct a temporary number from a date of birth. Keep the right-to-work process separate: payroll identification information does not establish permission to work. The onboarding checklist should show both tasks independently so the presence of a payroll record cannot be mistaken for completion of the employer's immigration checks.

Translate the contract into payroll settings

Confirm annual or hourly pay, pay frequency, normal hours and the method for calculating a partial first period. Include authorised allowances, overtime arrangements and any salary sacrifice or other relevant agreement. Ask the employer to resolve ambiguous terms before payroll applies a calculation. A salary figure in an offer letter may not explain how a mid-month starter's first payment should be determined.

Identify benefits, pension arrangements and deductions that need separate review. An item described informally as 'included in the package' may still require specific payroll or reporting treatment. Keep the source instruction with the setup record and note its effective date. This allows later queries to be answered from the authorised arrangement rather than from whichever setting happened to be selected during onboarding.

Verify payment details without oversharing

Collect bank details through the business's approved process and check any unexpected change using a trusted contact method. Do not rely only on an email that appears to come from a senior manager asking for an employee's wages to be redirected. Restrict access to those details to the people who need them for payroll and payment. A general staff directory does not need to contain salary or bank information.

Where a payroll provider prepares a payment file, agree who checks the employee list and releases the payment. Confirm that new starters are included once and that the net payment matches the approved payroll. Keep the verification record proportionate: evidence that the details were checked is useful, but unnecessary copies of identity documents in multiple finance folders create avoidable access and retention problems.

Close the starter record after the first run

Review the first payslip against the contract and source information before issuing it. Explain how the employee can raise a query privately and identify the payroll contact. If a P45 or HMRC notice arrives later, record its receipt and apply the relevant process rather than overwriting the earlier record without explanation. The history should show why the initial treatment was used and when new information changed it.

Use New starters without a P45 where the employee has no P45, and Payroll administration to discuss a secure payroll onboarding process. Provide an anonymised description of the missing information initially, then use an agreed secure channel for personal records. A well-organised starter pack should let the payroll team calculate the first payment accurately without repeatedly asking the employee for details already supplied elsewhere.

After onboarding, review who still needs access to the collected documents. Retain what is required under the applicable record rules, but remove unnecessary working copies from shared inboxes and temporary folders according to the business's retention process. Keep the authoritative version identifiable for later payroll checks.

Illustrative scenario

A new employee supplies starter details and a bank-account change before payday. Payroll verifies the change independently and reconciles the agreed salary to the contract before releasing the payment file.

Preparation checklist

• Collect starter information
• Confirm pay terms
• Verify bank details
• Complete separate right-to-work checks