PAYE (Pay As You Earn) compliance in the UK refers to the legal obligation for employers to deduct Income Tax and National Insurance contributions from employee pay and report this information to HM Revenue & Customs (HMRC). These obligations apply to businesses and organisations that employ staff, regardless of size.
PAYE compliance is enforced through real-time reporting requirements, strict payment deadlines, and penalty regimes. Employers are responsible for operating PAYE correctly and ensuring accurate payroll reporting throughout the tax year.
This guide explains PAYE compliance in the UK, including registration, payroll reporting, filing deadlines, penalties, and common compliance risks.
What Is PAYE?
PAYE is HMRC’s system for collecting Income Tax and National Insurance from employment income. Employers act as intermediaries, deducting tax and contributions before paying employees.
PAYE typically applies where a business:
- Employs staff
- Pays wages or salaries
- Provides taxable benefits
- Pays expenses subject to tax
PAYE obligations arise even if employees work part time or earn below certain thresholds.
Registering as an Employer
Employers must register with HMRC before making their first payroll payment. Registration is a statutory requirement and triggers ongoing PAYE reporting obligations.
Key registration requirements include:
- Registering before the first payday
- Receiving an employer PAYE reference
- Setting up payroll reporting systems
Failure to register on time may result in penalties.
Operating Payroll Correctly
PAYE compliance requires employers to operate payroll accurately for each pay period.
Payroll responsibilities include:
- Calculating Income Tax deductions
- Calculating employee and employer National Insurance
- Applying tax codes correctly
- Processing statutory payments
Accurate payroll calculations are essential for correct PAYE reporting.
Real Time Information (RTI) Reporting
HMRC requires employers to submit payroll information using Real Time Information (RTI). RTI submissions must be made on or before each payday.
RTI reporting includes:
- Full Payment Submissions (FPS)
- Employer Payment Summaries (EPS), where applicable
- Updates to employee pay and deductions
Late or incorrect RTI submissions may trigger penalties.
PAYE Filing and Payment Deadlines
HMRC enforces strict deadlines for PAYE reporting and payments.
Common deadlines include:
- RTI submissions: On or before each payday
- PAYE and National Insurance payments: Usually by the 22nd of the following month (or 19th if paying by post)
- Annual reporting deadlines: End of tax year submissions
Missing deadlines can result in automatic penalties and interest charges.
PAYE Record-Keeping Requirements
Employers must keep accurate payroll records to support PAYE calculations and submissions.
Required records typically include:
- Employee details and tax codes
- Payroll calculations
- RTI submission confirmations
- Payment records
PAYE records must usually be retained for at least three years from the end of the tax year.
Benefits in Kind and PAYE
Some employee benefits are subject to tax and National Insurance and must be reported to HMRC.
PAYE-related benefits may include:
- Company cars
- Private medical insurance
- Other non-cash benefits
Employers must report taxable benefits accurately and on time.
Penalties for PAYE Non-Compliance
HMRC applies penalties for failures to meet PAYE obligations.
Penalties may apply for:
- Late RTI submissions
- Late PAYE payments
- Incorrect payroll calculations
- Failure to keep proper records
Interest accrues on unpaid PAYE liabilities until settled.
Common PAYE Compliance Mistakes
PAYE errors often result from administrative issues rather than intent.
Common mistakes include:
- Submitting RTI late
- Using incorrect tax codes
- Missing payroll deadlines
- Incorrect National Insurance calculations
- Poor record-keeping
HMRC expects employers to take reasonable care when managing PAYE obligations.
PAYE Compliance Risks and HMRC Reviews
Non-compliance increases the likelihood of HMRC payroll checks or compliance reviews.
Risk factors include:
- Repeated late submissions
- Frequent payroll corrections
- Inconsistent reporting
- Missing documentation
HMRC may request payroll records or explanations to verify compliance.
Digital Payroll and PAYE Compliance
Most PAYE reporting is completed digitally using payroll software. Digital systems help support compliance by automating calculations and RTI submissions.
Digital tools assist with compliance but do not remove the employer’s legal responsibility for accuracy.
PAYE Within UK Tax Compliance Requirements
PAYE compliance forms part of wider
UK tax compliance requirements
and must be managed alongside other tax obligations.
Employers who are also subject to Self Assessment must ensure compliance with
Self Assessment tax requirements
where applicable.