Can I Be Employed and Self-Employed? 2026/27 Tax Guide

Updated for 2026/27. You can be employed and self-employed at the same time. Your employer deducts PAYE from salary, while you separately report taxable business profit and other income. Employment and self-employment must be genuine; the label in a contract does not override the actual working relationship.

How the two roles are taxed

Employment salary, bonuses and benefits are taxed through PAYE. Self-employed taxable profit is normally calculated through Self Assessment. The final Income Tax calculation combines both sources, so salary can use the Personal Allowance and push business profit into higher-rate bands.

When to register for Self Assessment

If gross self-employed income exceeds £1,000 in 2026/27, you normally need to register, subject to the trading-allowance rules and exclusions. Gross income means customer receipts before expenses. For the year ending 5 April 2027, the usual notification deadline is 5 October 2027 and online filing deadline is 31 January 2028.

Example tax calculation

Alex earns £38,000 through employment and makes £18,000 taxable self-employed profit. PAYE covers salary only. Self Assessment combines £56,000 total income before other items, credits the PAYE already deducted and calculates additional Income Tax and National Insurance on the business profit.

National Insurance

Class 1 is deducted from employment pay. For 2026/27, self-employed Class 4 is 6% on profits between £12,570 and £50,270 and 2% above £50,270. If self-employed profits are at least £7,105, Class 2 is treated as paid for the National Insurance record; below that amount, voluntary Class 2 at £3.65 a week may be considered.

Annual maximum rules can limit combined contributions in some cases. Complete the employment and self-employment return sections accurately so HMRC can apply the correct treatment.

Allowable business expenses

Claim costs incurred wholly and exclusively for the self-employed trade, such as business software, professional fees, marketing, business travel and the business portion of mixed-use costs. Do not claim costs already reimbursed by the employer or ordinary commuting to employment.

Trading allowance

Eligible gross trading income up to £1,000 can be fully relieved. Above £1,000, you may elect to deduct the allowance instead of actual expenses. It cannot be used for certain income from an employer, connected company or partnership, so side work for the same organisation requires careful review.

Employment status and off-payroll rules

Doing extra work outside normal hours does not automatically make it self-employment. Consider control, personal service, substitution, financial risk, equipment, integration and mutual obligations. A person can be an employee for one role and self-employed for another, but each engagement is tested on its facts.

Where services are supplied through an intermediary, off-payroll working or IR35 rules may apply. The engager’s size and sector can affect who makes the status decision.

Contract and conflict checks

Review the employment contract for restrictions on outside work, competition, confidentiality, intellectual property, working time and use of employer equipment or clients. Obtain written consent where required. Tax registration does not override contractual duties.

VAT

Employment salary is outside the self-employed business’s VAT turnover. Register for VAT when taxable business turnover exceeds the £90,000 threshold under the historic or forward-looking tests. If you run several sole-trader activities, their taxable turnover is generally combined because the same individual carries them on.

Payments on account

The first Self Assessment bill can include both the balancing amount and the first payment on account for the next year. Payments on account may not be required where the qualifying liability is low or most tax was collected at source. PAYE on salary can therefore reduce—but not automatically eliminate—the instalments.

Student and postgraduate loans

Payroll deducts loan repayments from employment pay. Self Assessment considers total relevant income and credits amounts already deducted. The return can therefore generate an additional loan repayment on business profit.

Pensions

You can remain in a workplace pension and also contribute to a personal pension, subject to annual allowance, earnings and scheme rules. Employer and personal contributions can affect adjusted net income and tax relief. The relevant earnings limit for personal relief does not generally include dividends or property income.

Benefits and Universal Credit

Report earnings and self-employed income under the rules of the relevant benefit. Universal Credit uses monthly assessment and minimum-income-floor rules that differ from annual tax profit. A tax deduction does not automatically produce the same benefit calculation.

Making Tax Digital for Income Tax

Employment salary is not qualifying income for the MTD entry threshold. Gross self-employment and property income are relevant. MTD begins from April 2026 above £50,000 qualifying income, from April 2027 above £30,000 and from April 2028 above £20,000, subject to eligibility and exemptions.

Records to keep

• Payslips, P45s, P60s and benefit records
• Business invoices, expenses and bank records
• Contracts showing the separate roles
• Mileage and home-working calculations
• Pension and student-loan statements
• VAT and MTD records where relevant
• Filed returns and payment receipts

Practical checklist

1. Confirm that the side activity is genuinely self-employed.
2. Check the employment contract and obtain consent if needed.
3. Register by the deadline when gross income exceeds £1,000.
4. Keep business records separate from employment documents.
5. Forecast combined Income Tax, NI and loan repayments.
6. Reserve cash for 31 January and payments on account.
7. Review VAT and MTD thresholds using business income only.

Use HMRC’s official guidance on working for yourself and employment status. Our 2026/27 trading allowance guide covers small side-hustle income.

Frequently asked questions

Will my employer know about the business?

HMRC does not normally disclose your tax return to the employer, but contractual, conflict or regulatory duties may require notification.

Do I get two Personal Allowances?

No. One Personal Allowance applies across total qualifying income.

Can PAYE collect the business tax?

Some eligible smaller liabilities can be coded out, but Self Assessment reporting may still be required.

This guide is general information. Employment status and off-payroll rules require fact-specific review.