Payroll software with auto enrolment: 5 UK options compared

What to take away

• Auto enrolment is a buying filter, not a tick box. Test pension provider integration, re-enrolment dates and the audit trail you would give The Pensions Regulator.
• The five options are specialist payroll software, an accounting suite module, a bureau service, an HR platform with payroll, and a managed payroll service. Each shifts the work differently.
• A file that transmits is not proof of compliance. Check assessment, postponement, opt-outs, refunds and declaration evidence.
• The employer remains responsible for the declaration of compliance under the Pensions Act 2008, even when a provider runs the payroll.
• Price the full cycle. A supplier quote per employee per month can look small until you add re-enrolment runs, pension scheme changes and correction work. The payroll software costs and budget guide sets out those stages.

Why auto enrolment changes the comparison

Auto enrolment duties cover assessment, enrolment, contributions, re-enrolment and records. A payroll product that only deducts pension contributions leaves the employer to manage the rest by hand.

The Pensions Act 2008 sets the automatic enrolment duty in Great Britain, with parallel rules in Northern Ireland. Your software should map each worker's category, postponement date and contribution rate to that framework.

Pension payroll integration is the practical test. It decides whether contribution files leave on time, whether errors return with enough detail, and whether you can reconcile a failed file without rebuilding the period.

The five options compared

Option	Pension payroll integration to test	Re-enrolment support to test	Evidence for The Pensions Regulator	Fits when
Specialist payroll software	Direct links to named providers, file exports, error reports	Cyclical re-enrolment reports and prompts	Assessment history, contribution schedules, declarations	You want control and already run payroll
Accounting suite module	Add-on links, CSV files, manual uploads	Varies by module and pension provider	Ledger plus payroll reports, often split	Accounts, payroll and VAT sit together
Bureau service	Bureau sends files and handles provider queries	Bureau tracks dates under contract	Bureau supplies records, employer declares	No internal payroll team
HR platform with payroll	Integrated if one vendor, otherwise export	Joiner and leaver data can trigger reviews	Combined people and pay record	HR drives onboarding and absence
Managed payroll service	Provider owns run, file and provider contact	Contract must state re-enrolment ownership	Provider gives evidence, employer signs off	Complex pay, multiple sites or fast growth

The table is a question list, not a league table. Ask each supplier to show those items in a live demonstration, using your pension provider and your worker types.

What to test before you buy

1. Ask for a live run with your pension provider, not a recorded demo.
2. Send a test file containing a new joiner, a leaver, an opt-out and a postponed worker.
3. Check the error report. It should name the worker, the field and the correction needed.
4. Confirm how the software calculates re-enrolment dates and who reviews the output.
5. Read the data processing terms, especially retention, access and subject access requests, against the ICO's UK GDPR guidance.
6. Agree who corrects underpaid or overpaid contributions, within what timescale, and at whose cost.

Re-enrolment duties and the evidence trail

Re-enrolment is cyclical, not a one-off setup task. Employers must assess eligible workers again, usually every three years, and re-enrol those who meet the rules.

Software can schedule the date, but it cannot decide whether your records are complete. Keep assessment history, contribution files, opt-out notices and communications in one exportable place.

Tax relief on pension contributions depends on the scheme being registered, and the Finance Act 2004 sets the framework. Check how the software handles relief at source, net pay and any change to contribution rates.

Costs, contracts and switching

Pricing usually follows employee bands, scheme count or a per-payslip rate. Illustrative only: a quote of £3 per employee per month for 50 employees is £150 per month before add-ons.

Add re-enrolment runs, pension scheme changes, parallel runs, error correction and exit exports. A cheap module can become costly if your team spends a day each period fixing files.

Ask for a written breakdown that separates licence, pension module, bureau fees and training. That makes renewal negotiations easier and exposes charges that appear after go-live.

The contract should name the pension providers covered, the file formats, service credits, correction windows and the data you get back on exit. For a structured move, read how to switch payroll software before you give notice.

Common questions

Does payroll software handle re-enrolment automatically?

Some products schedule the date and produce a review list. The employer still checks eligibility, postponement and contribution rates before re-enrolling anyone.

Which option gives the best pension payroll integration?

The best fit is the one that connects to your chosen pension provider and returns clear error data. A specialist payroll product often wins on depth, while a managed service wins when you lack internal payroll capacity.

Can I use free HMRC software with a workplace pension?

HMRC Basic PAYE Tools can calculate PAYE, but it does not manage pension assessment, contribution files or re-enrolment. Many employers use separate workplace pension software or a bureau for those duties.

Who signs the declaration of compliance?

The employer does, even when a payroll provider or bureau runs the pension files. The provider should give you the evidence, but the legal duty stays with the employer.