Pillar Guide · Updated May 2026
UK Working From Home Tax Relief 2026/27: HMRC £6/Week Flat Rate, Actual Costs, Self-Employed Home Office and How to Claim via P87 or Self Assessment
UK employees who are required to work from home can claim HMRC's flat rate of £6 per week (£312/year) without receipts, worth £62.40 for basic-rate taxpayers or £124.80 for higher-rate taxpayers annually. The claim is made online via P87 (no Self Assessment return needed) or on your tax return. Self-employed people can use HMRC's simplified flat rates (up to £26/month for 101+ hours/month at home) or the actual-proportion method against real energy and broadband costs. Eligibility tightened significantly from April 2022: you must be genuinely required by your employer to work from home — voluntary hybrid working does not qualify. Claims can be backdated up to 4 tax years. This guide covers eligibility rules, both methods for employees and self-employed, how to claim, broadband treatment, Capital Gains Tax pitfalls for self-employed home offices, and the most common mistakes that trigger HMRC compliance checks in 2026/27.
Who Can Claim Working From Home Tax Relief in 2026/27?
HMRC's working from home relief is available to employees (PAYE or Self Assessment), sole traders, and partners in a partnership. The eligibility rules differ for employees and the self-employed, and post-pandemic changes made the employee rules considerably stricter.
Employee eligibility (PAYE workers)
From 6 April 2022 onwards, HMRC reverted to the pre-pandemic strict rule: you qualify only if your employer requires you to work from home. The three qualifying scenarios are:
- No employer workplace: your employer has no office or permanent place of work at all (common for fully-remote employers)
- Home is your designated workplace: your employment contract explicitly states your home as your place of work
- Employer facility unavailable: the employer's workplace does not have adequate facilities for the work you do (e.g., a specialist function requiring dedicated home equipment)
You cannot claim if: you choose to work from home voluntarily; your employer has an accessible office but you prefer WFH; you have a hybrid arrangement where you attend the office on some days and WFH on others by choice. HMRC has run compliance campaigns since 2022 targeting employees who claimed under the pandemic relaxation but no longer qualify.
Pandemic era (2020/21 and 2021/22):HMRC allowed any employee who worked from home even one day to claim the full year's relief. These years are now outside the 4-year backdating window (closes April 2025 and April 2026 respectively), so most pandemic-era claims are closed.
Self-employed eligibility
Sole traders and partners who use their home for business always qualify for some home-office relief — there is no requirement to be 'required' to work from home. The question is how much you can claim. HMRC accepts two methods (see below). There are no time restrictions on backdating via Self Assessment (within the normal 4-year amendment window).
Method 1 — HMRC Flat Rate for Employees (£6/Week)
The simplest route: claim £6 per week (£312 per year) without keeping any receipts or doing any calculation. HMRC sets this rate to cover the additional energy and broadband costs of working from home. You do not need to verify your actual bills.
Employee flat-rate value (2025/26)
| Tax band | Annual relief | Tax saving |
|---|---|---|
| Basic rate (20%) | £312 | £62.40 |
| Higher rate (40%) | £312 | £124.80 |
| Additional rate (45%) | £312 | £140.40 |
Rate: £6/week × 52 weeks = £312. No receipts or calculation required.
How to claim as an employee (P87)
Most employees do not file a Self Assessment return. They claim via P87 online on the HMRC website (gov.uk/claim-tax-relief-for-your-job-expenses). You will need:
- Your National Insurance number
- PAYE reference (from P60, payslip, or employer)
- Your employment details (employer name, start/end date for each tax year)
- The amount you are claiming (£312/year flat rate, or actual costs if higher)
HMRC processes the claim and either (a) adjusts your PAYE tax code to give ongoing relief — you then pay less tax each month — or (b) issues a repayment cheque / bank transfer for backdated years. Processing time is typically 4-6 weeks.
If you file Self Assessment, include the WFH relief on your employment page (Box 20: Other expenses and capital allowances).
Method 2 — Actual Costs (Employees)
If your actual additional home costs exceed £6/week, you may prefer the actual costs method. This requires keeping records and doing a calculation, but may result in higher relief.
HMRC's accepted approach for employees:
- Add up your annual home running costs: gas, electricity, water, broadband. Exclude mortgage, rent, council tax, and insurance (not allowable for employees).
- Divide by the number of rooms in the home (excluding bathrooms and hallways).
- Multiply by the proportion of time that room is used for work (hours working from home ÷ hours in a week).
Worked example — actual costs method (employee)
- Annual gas + electricity + water + broadband: £3,200
- Rooms in home (excl. bathrooms): 5
- Per-room cost: £3,200 ÷ 5 = £640
- WFH hours per week: 37.5 out of 168 total = 22.3%
- Work proportion of room: 37.5 ÷ 168 = 22.3%
- Claimable: £640 × 22.3% = £142.72/year
- vs flat rate: £312/year
- → Flat rate wins in this example
Actual costs only beat the flat rate when energy bills are very high and the home is small (few rooms). The flat rate of £6/week is the right choice for the vast majority of employees.
Important: choose one method per year
You must use either the flat rate OR actual costs for a given tax year — not both. Compare which is higher before filing.
Working From Home Relief for the Self-Employed
Sole traders and partners have more flexibility than employees. HMRC offers two methods:
Method A — Simplified flat rates (HMRC published table)
These are fixed monthly amounts based on hours worked at home per month. No receipts required.
Self-employed WFH simplified rates (2025/26)
| Hours worked at home per month | Monthly allowance | Annual max |
|---|---|---|
| 25 to 50 hours | £10 | £120 |
| 51 to 100 hours | £18 | £216 |
| 101 or more hours | £26 | £312 |
Source: HMRC simplified expenses (gov.uk/simpler-income-tax-simplified-expenses). Maximum = £312/year if working 101+ hrs/mo at home.
This rate is generally less generous than the actual-proportion method for sole traders with significant home costs. Use it only if you want simplicity.
Method B — Actual proportion of home costs
Self-employed people can claim a proportion of ALL home running costs: mortgage interest (not capital), rent, council tax, gas, electricity, water, broadband, buildings insurance, and even cleaning. This is much more generous than the employee method.
The calculation: identify what proportion of the home is used for business — by area (square metres of dedicated workspace ÷ total floor area) and by time (hours used for business ÷ total hours available). Multiply the two proportions to get an overall allocation factor, then apply to total home costs.
Worked example — actual proportion (self-employed)
- Total annual home costs (rent + energy + broadband + council tax): £14,400
- Home area: 80 sq m; home office: 10 sq m → area proportion: 12.5%
- Hours used for work: 40/wk ÷ 168 available = 23.8%
- Combined proportion: 12.5% × 23.8% = 2.98%
- Annual deduction: £14,400 × 2.98% = £429/year
- → Much better than £312 simplified rate
Capital Gains Tax warning for self-employed home offices
If you claim a room as exclusively used for business (100% business use, no personal use), HMRC may apportion Private Residence Relief (PRR) on your home when you sell, meaning part of any gain is taxable. To preserve full PRR, ensure the room has some personal use — e.g., doubles as a guest room or study. Using a proportion of a shared room (rather than a dedicated room) avoids this problem entirely.
Broadband Costs — What Can You Claim?
Broadband is claimable for both employees and self-employed, but only the additional or proportionate cost attributable to work:
- Employees (flat rate): broadband is notionally included in the £6/week. You cannot add broadband on top of the flat rate.
- Employees (actual costs): include broadband in your total home costs and apply the same time/room proportion.
- Self-employed: if broadband is essential for business, claim the business-proportion of the annual cost. If you would have had broadband anyway for personal use, claim only the work fraction (e.g., 60% work = 60% of £600/yr = £360 deductible).
- Dedicated business-only broadband line: if you have a separate broadband contract solely for business, claim 100% of that cost. Keep the invoice as evidence.
Backdating Your Claim — Up to 4 Tax Years
HMRC allows relief claims going back 4 complete tax years. From May 2026, the open years are:
- 2025/26 (current year — claim now or at year-end)
- 2024/25 (deadline 5 April 2029)
- 2023/24 (deadline 5 April 2028)
- 2022/23 (deadline 5 April 2027)
The 2021/22 year (pandemic relaxation) closed for P87 claims on 5 April 2026. For employees, submit a separate P87 for each year. HMRC may process these together but they must reference the correct year. For Self Assessment, amend the relevant return (available online in your Personal Tax Account for up to 12 months after submission; beyond that, via an overpayment relief claim).
Maximum backdated employee claim (basic-rate taxpayer)
£312 × 4 years = £1,248 relief × 20% = £249.60 refund. Higher-rate: £312 × 4 × 40% = £499.20. No receipts needed for flat rate.
Employer Reimbursement vs Tax Relief
If your employer pays you a working from home allowance, the interaction with tax relief depends on the amount:
- Employer pays £6/week or less: fully tax-free under HMRC's exemption (EIM01476). You cannot also claim the HMRC flat-rate tax relief on the same £6 — it would be double-claiming. If the employer pays £4/week, you can claim an additional £2/week tax relief.
- Employer pays more than £6/week: the excess over £6/week is taxable employment income and goes through payroll (PAYE). You cannot claim tax relief on top of this.
- Employer pays nothing: claim the full £6/week flat rate yourself via P87.
Common Mistakes and HMRC Compliance Risks
Common mistakes that trigger HMRC compliance
- 1. Claiming as a hybrid worker when the office is available. If you choose to WFH some days and go to the office on others, you do not qualify post-April 2022 — even if your employer formally offers 'flexible working'. The test is whether home is your REQUIRED workplace, not whether you sometimes WFH.
- 2. Claiming rent or mortgage as an employee. Employees cannot claim occupancy costs (rent, mortgage, council tax). Only gas, electricity, water, broadband are allowable.
- 3. Combining flat rate and actual costs in the same year. These methods are mutually exclusive per tax year. Choose the higher one.
- 4. Self-employed: claiming 100% business use of a room. Triggers CGT PRR apportionment on home sale. Maintain some personal use of all rooms used for business.
- 5. Forgetting employer reimbursements. If your employer pays £4/week, you can claim only £2/week additional (not the full £6/week flat rate).
- 6. Missing the 4-year window. Claims beyond 4 years are statute-barred. Don't leave prior-year claims on the table.
Calculating Your WFH Tax Relief — Use CalcHub
Use our Take-Home Pay Calculator to model the impact of working-from-home expenses on your net annual pay, or our Self-Employed Tax Calculator to see how home-office deductions reduce your Self Assessment bill.