Do new companies need to register for PAYE with HMRC in 2026?

Yes — any UK employer who pays employees or directors above PAYE thresholds must register with HMRC before the first payroll run. Register within 4 weeks of hiring if payments or benefits begin.

What are HMRC PAYE rules, and which mistakes do new companies make?

PAYE (Pay As You Earn) requires employers to operate payroll, deduct income tax and National Insurance, and report to HMRC on time. New companies often misunderstand registration timing, payroll reporting, and payroll-class rules, which trigger penalties and late liabilities.

HMRC requires employers to register for PAYE when they pay employees or directors. Registration creates an employer PAYE reference and sets up online payroll reporting via Real Time Information (RTI). Employers must operate PAYE from the first pay date and submit Full Payment Submissions (FPS) each time they pay. Employers also submit Employer Payment Summary (EPS) if adjustments or recoveries occur. Failure to comply leads to fines, National Insurance shortfalls, and enforcement action.

How should a new company register for PAYE and avoid late registration?

Register online with HMRC as an employer at least 4 weeks before the first payroll date, supply accurate company and director details, and keep the employer PAYE reference secure. Late registration causes penalties and backdated liabilities.

Registering requires the company’s Government Gateway details, company registration number, business address, and director information (including NI numbers). HMRC issues an employer PAYE reference and activation codes for online accounts. Use payroll software that supports RTI and Single Touch Payroll style workflows. Track registration confirmation dates and schedule the first FPS to match payroll frequency. If you hire temporary staff, register as soon as contracts or payments start. Read our articles,  Fix delayed PAYE registration UK using 5 practical solutions and Reliable PAYE setup service trusted by growing UK businesses 

What common mistake leads to incorrect tax and National Insurance calculations?

Using the wrong tax code, misclassifying employment status, or failing to apply the correct National Insurance classes produces calculation errors. Accurate staff classification and correct tax codes prevent under- or over-deductions.

Assign correct tax codes by requesting a P45 from new hires or using HMRC’s starter checklist when a P45 is absent. Distinguish workers from contractors by verifying employment contracts, control, mutuality of obligation, and substitution rights. Apply National Insurance class 1 for employees; use class 1A/1B for benefits in kind and PAYE Settlement Agreements. Double-check pension auto-enrolment contributions that affect National Insurance calculations and employer costs. Reconcile payroll reports monthly to catch misapplied codes.

Why do new companies miss RTI reporting deadlines?

Failing to submit Full Payment Submissions (FPS) on or before each payroll run causes missed RTI deadlines. Late or missing FPS filings lead to penalty notices and interest accrual on unpaid tax.

RTI requires an FPS every time you pay staff. Payroll software should generate and transmit FPS automatically on the pay date. Keep payment schedules consistent — weekly, fortnightly, or monthly and align FPS timings with those schedules. If no employees are paid in a tax month, submit an EPS to report nil payments or recover statutory payments. Designate a responsible payroll owner to run reports and confirm successful HMRC submissions before funds leave the bank.

How do incorrect student loan and statutory payment settings create underpayments?

Setting the wrong student loan plan types or statutory pay rates results in inaccurate deductions and entitlements. Use official HMRC and DWP rate tables for precise calculations.

Identify student loan plan types: Plan 1, Plan 2, Plan 4, or Postgraduate Loan. Verify each employee’s plan in their starter checklist or HMRC gateway. Apply statutory rates for Statutory Sick Pay (SSP), Statutory Maternity Pay (SMP), Statutory Paternity Pay (SPP), and Shared Parental Pay using current weekly rates and qualifying criteria. Record qualifying days and average weekly earnings correctly to calculate entitlement windows. Reconcile statutory pay claims with payroll records and submit recoveries using EPS where eligible.

What reporting errors cause discrepancies during PAYE audits?

Omitting benefits in kind, misreporting expenses, or failing to submit P11D forms creates audit discrepancies. Capture all taxable benefits and report them in the correct forms and timelines.

Report benefits in kind, such as company cars, medical insurance, or reward vouchers. Use P11D and P11D(b) forms for benefits where tax was not collected through PAYE. Submit P11D returns by 6 July following the tax year and P11D(b) to report employer Class 1A National Insurance due. Update payroll software with taxable benefit values to operate payroll settlement agreements where employers collect tax via payroll. Keep supporting evidence like benefit valuation and mileage records for at least 3 years to satisfy HMRC inquiries.

How can new companies fix delayed PAYE registration and avoid penalties?

Contact HMRC immediately, register as an employer, and file backdated FPS submissions to clear outstanding reporting obligations. Pay any tax and National Insurance due with interest to stop penalty escalation.

When registration is late, gather payroll records, employee start dates, pay dates, and deduction histories. Register online, note the employer PAYE reference, and submit retrospective FPS entries for each pay period. Use EPS to claim statutory pay recoveries. If penalties appear, request a penalty review with supporting evidence showing a prompt remedial response. Engage specialist payroll support if internal resources cannot reliably reconstruct historic pay details.

Explore our Register Your Company for PAYE guides,

How Does PAYE Work for a Small Limited Company in the UK 

When Must a UK Company Register for PAYE with HMRC by Law 

How does Company Registration handle PAYE setup for growing businesses?

My Company Registration provides Register Your Company for PAYE services that register employers with HMRC, configure payroll for RTI, and produce compliant FPS and EPS filings. The service reduces setup errors and speeds HMRC activation.

The Register Your Company for PAYE service sets up online HMRC employer accounts and records Director and employee details. The service configures payroll software for correct tax codes, National Insurance classes, statutory pay rates, and student loan plan types. It also documents internal payroll processes and hands over reporting responsibilities. This reduces registration time and limits common errors that trigger penalties.
New employers must register for PAYE before the first payroll event and comply with RTI reporting, tax codes, National Insurance classes, and benefits reporting. Prompt registration, accurate classification, and automated payroll reduce penalties. My Company Registration’s Register Your Company for PAYE service manages setup, validates compliance, and produces accurate HMRC submissions to protect businesses during growth.

Frequently Asked Questions

How long does it take to register my company for PAYE with My Company Registration?

Registration typically takes 2–8 weeks for HMRC to issue an employer PAYE reference once you submit the required details. My Company Registration submits the application and advises on interim payroll steps while HMRC processes the registration.

What information do I need to register my company for PAYE?

You need company details, director and employee names, National Insurance numbers, payroll start date, and company registration number. My Company Registration provides a checklist and validates IDs to ensure RTI submissions are accurate.

Can I run payroll before HMRC issues a PAYE reference?

You can calculate payroll internally, but you must not finalise RTI submissions without an employer PAYE reference. My Company Registration explains temporary reporting procedures and helps schedule the first FPS once HMRC assigns the reference.

How does Register Your Company for PAYE handle employee benefits and pensions?

The service configures payroll of benefits and auto-enrolment pension settings to comply with HMRC and The Pensions Regulator. My Company Registration documents benefit reporting and set payroll to calculate Class 1 and Class 1A National Insurance correctly.

What penalties apply for late PAYE registration, and can My Company Registration help resolve them?

HMRC issues penalties for late registration, late filings, and late payments; penalties escalate with delay and unpaid tax. My Company Registration helps calculate retrospective liabilities, submit late RTI, and liaise with HMRC to request Time to Pay agreements.