Weekly Allowance
Annual Allowance
Your Tax Relief
Tax Relief by Tax Rate
Total Annual Costs
Business Use %
Claimable Amount
Your Tax Relief
Flat Rate vs Actual Comparison
Total Equipment Cost
Claimable Portion
Tax Relief
Who Can Claim Working From Home Tax Relief?
You CAN Claim If:
You CANNOT Claim If:
Tax Relief Amounts at Each Rate
How to Claim Working From Home Tax Relief
-
Check Your Eligibility
Confirm your employer requires you to work from home - voluntary home working doesn't qualify. -
Choose Your Method
Decide between flat rate (£6/week, no receipts needed) or actual expenses (requires detailed records). -
Gather Your Information
You'll need your Government Gateway login, employer PAYE reference, and dates worked from home. -
Submit Your Claim
Use the HMRC online service, complete form P87, or include on your Self Assessment tax return. -
Receive Your Relief
HMRC will adjust your tax code or send you a refund. This typically takes 4-8 weeks.
Frequently Asked Questions
Related Calculators
Last updated: February 2026 | Verified with latest UK rates
Expert Reviewed — This calculator is reviewed by our team of financial experts and updated regularly with the latest UK tax rates and regulations. Last verified: February 2026.
Working From Home Tax Relief: Complete Guide 2025/26
If your employer requires you to work from home, HMRC allows you to claim tax relief on the additional household costs you incur. There are two main methods: the simplified flat rate method (£6 per week) and the exact calculation method based on actual expenses. Understanding which method suits your situation can mean the difference between claiming £62 or over £500 in annual tax relief.
Claim Methods & Rates 2025/26
| Method | Annual Allowance | Basic Rate Relief (20%) | Higher Rate Relief (40%) | Additional Rate (45%) |
|---|---|---|---|---|
| HMRC Flat Rate (£6/week) | £312 | £62.40 | £124.80 | £140.40 |
| Exact Calculation Method | Varies (typically £500-£1,500+) | 20% of actual costs | 40% of actual costs | 45% of actual costs |
| Employer Payment (tax-free) | Up to £6/week | Tax-free if employer pays up to £6/week (no claim needed) | ||
The £6/Week Flat Rate Method Explained
The flat rate method is the simplest way to claim working from home tax relief. You do not need to keep receipts or calculate actual costs. HMRC allows you to claim £6 per week (£312 per year) in additional household expenses without providing evidence.
The tax relief you actually receive depends on your tax band: basic rate taxpayers save £62.40 per year, higher rate taxpayers save £124.80, and additional rate taxpayers save £140.40. While these amounts are modest, the claim takes just a few minutes and the relief can be backdated for up to 4 tax years.
The Exact Calculation Method
If your actual additional costs exceed £6 per week, you can claim the exact proportion of household bills attributable to working from home. Eligible expenses include electricity, gas, water, internet (business proportion), home insurance (additional premium for business use), and council tax. You calculate the business proportion based on the number of rooms used for work and the hours worked.
For example, if you have a dedicated home office (1 of 5 rooms) and work from home 5 days a week (5 of 7 days), your business proportion would be approximately (1/5) x (5/7) = 14.3% of total household utility costs. You must keep all receipts and bills as evidence.
How to Claim: P87 vs Self Assessment
| Claim Method | Best For | Time to Process | Notes |
|---|---|---|---|
| Online (gov.uk) | Flat rate claims only | 2-6 weeks | Fastest method; adjusts your tax code |
| Form P87 | PAYE employees, total claims under £2,500 | 8-12 weeks | Post or online; for flat rate or exact costs |
| Self Assessment | Self-employed or claims over £2,500 | With annual return | Include in employment expenses section |
Eligibility Requirements
To qualify for working from home tax relief, you must meet specific criteria. Your employer must require you to work from home; simply choosing to is not sufficient. Valid reasons include: no suitable office space available, your role requires home working (e.g., distance from office), or your contract specifies home as your workplace.
Hybrid workers who split time between home and office can claim for the days worked from home, but only if home working is a requirement and not voluntary. Since the end of blanket COVID-19 eligibility in April 2022, HMRC has tightened enforcement, so ensure your circumstances genuinely qualify before claiming.
How to Use This Working From Home Tax Relief Calculator
Follow these five steps to calculate your working from home tax relief:
- Confirm your employer required you to work from home — You can only claim if your employer requires you to work from home, not if you simply choose to. Valid reasons include no available office space, your contract specifies home as your workplace, or your role requires it. Choosing to work from home for convenience does not qualify.
- Select your claim method — Choose between the HMRC flat rate of £6 per week (£312 per year), which requires no receipts, or the actual costs method where you calculate the business proportion of your real household expenses for a potentially higher claim.
- Enter the number of weeks you worked from home — Input how many weeks during the tax year you worked from home as required by your employer. For full-year home workers this is typically 52 weeks. Hybrid workers should count all weeks where at least some home working was required.
- Select your tax band — Choose whether you are a basic rate (20%), higher rate (40%), or additional rate (45%) taxpayer. Your tax band determines the actual cash value of your relief, as you save tax at your marginal rate.
- View your annual tax relief amount — The calculator displays your total claimable allowance and the actual tax relief you will receive. Compare the flat rate and actual costs methods to see which gives you the greater benefit.
Worked Examples: WFH Tax Relief Scenarios
Scenario 1: Full-Time Home Worker Using Flat Rate
David is a software developer earning £42,000. His employer has no office, so he works from home full-time. He is a basic rate taxpayer and claims the flat rate.
- Annual flat rate allowance: 52 weeks x £6 = £312
- Tax relief at 20%: £312 x 20% = £62.40 per year
- HMRC adjusts his tax code so he receives relief automatically through PAYE
- He claimed online in 10 minutes with no receipts needed
Tip: David can also backdate claims for up to 4 years (2021/22 onwards), potentially receiving a lump sum of approximately £250 in backdated relief.
Scenario 2: Higher Rate Taxpayer Using Exact Calculation
Rebecca is a marketing director earning £72,000. She works from home 4 days per week as required by her employer. She uses a dedicated room as a home office in her 4-bedroom house.
- Annual household costs: electricity £1,800 + gas £1,200 + broadband £480 + council tax £2,400 = £5,880
- Room proportion: 1 room out of 6 usable rooms = 16.7%
- Working proportion: 4 days out of 7 = 57.1%
- Combined proportion: 16.7% x 57.1% = 9.5%
- Claimable amount: £5,880 x 9.5% = £558.60
- Tax relief at 40% (higher rate): £558.60 x 40% = £223.44 per year
Comparison: The flat rate would give Rebecca only £124.80, so the exact method saves her an extra £98.64 per year. Over 4 years of claims, that difference adds up to nearly £400.
Scenario 3: Hybrid Worker (Mixed Pattern)
Mark is a project manager earning £38,000. His employer requires him to work from home 2 days per week due to limited office space. He uses the flat rate method.
- Mark works from home every Tuesday and Thursday as required by his employer
- He qualifies for the full £6/week flat rate (it is not pro-rated for part-week home working)
- Annual allowance: £312
- Tax relief at 20% (basic rate): £312 x 20% = £62.40 per year
- He claimed via form P87 which took approximately 15 minutes to complete
Important: The flat rate is not reduced for hybrid working. As long as you regularly work from home as a requirement, you claim the full £6/week. However, Mark must genuinely be required to work from home, not simply choosing to.
Sources & Methodology
This calculator is built using official HMRC rules and current tax legislation for the 2025/26 tax year. Below are the key sources and parameters used in our calculations:
- HMRC Official Guidance: Tax relief for employees working at home (GOV.UK) — the definitive source for eligibility, claim methods, and current allowance rates.
- Flat rate allowance: £6 per week (£312 per year) with no receipts required. Your employer can pay this tax-free, or you can claim tax relief from HMRC on this amount. Basic rate taxpayers receive £62.40, higher rate £124.80, and additional rate £140.40 per year.
- Actual costs method: You must calculate the proportion of household bills (electricity, gas, broadband, water, council tax) attributable to working from home, based on the number of rooms used and hours worked. All receipts and records must be kept for at least 6 years as evidence.
- Backdating claims: You can claim for the current tax year and the previous 4 tax years. In 2025/26, this means you can still claim back to 2021/22, potentially recovering several years of unclaimed relief in a single lump sum.
- Eligibility: Your employer must require you to work from home. Since April 2022, blanket COVID-19 eligibility no longer applies. Valid reasons include no office space available, contractual home working, or role-specific requirements.
Disclaimer: This calculator provides estimates based on standard HMRC working from home tax relief rules for the 2025/26 tax year. It is intended for general guidance only and does not constitute professional tax advice. Individual circumstances vary, and your eligibility depends on your specific employment arrangements. Always check with HMRC or consult a qualified tax adviser if you are unsure whether your circumstances qualify for this relief.
Additional WFH Tax Relief Questions
Can I claim WFH tax relief if my employer already pays me £6/week?
No. If your employer already pays you £6 per week (or £26 per month) tax-free as a home working allowance, you cannot claim again from HMRC. However, if your employer pays less than £6/week, you can claim the difference.
For example, if your employer pays £3/week, you can claim tax relief on the remaining £3/week (£156/year) from HMRC. If your actual costs exceed £6/week, you can claim the full actual amount through the exact calculation method, but must offset any employer payments received.
Does working from home affect my capital gains tax if I sell my house?
Using a room exclusively for business could technically affect your Principal Private Residence (PPR) relief. If a room is used exclusively and wholly for business, HMRC could argue that portion of the property is not your residence. However, in practice, if the room is also used for personal purposes (e.g., a study that doubles as a guest room) or you do not claim business rates, the risk is minimal.
Most tax advisers recommend ensuring rooms have dual use to protect full PPR relief. Claiming the flat rate (£6/week) carries no risk to your CGT exemption.
Can self-employed people claim working from home expenses?
Yes, but through a different mechanism. Self-employed individuals use HMRC's simplified expenses rates: £10/month for 25-50 hours worked from home, £18/month for 51-100 hours, or £26/month for 101+ hours. Alternatively, you can calculate the actual proportion of household costs, which often yields a higher claim.
Self-employed claims are made through the Self Assessment tax return and reduce your taxable profit rather than providing direct tax code relief. Keep detailed records of hours worked from home if using the simplified method.
How far back can I claim working from home tax relief?
You can backdate claims for up to 4 years. In 2025/26, this means you can still claim for 2021/22, 2022/23, 2023/24, and 2024/25 tax years, plus the current year. For the 2020/21 and 2021/22 tax years, blanket COVID-19 eligibility applied, meaning anyone who worked from home for even one day qualified.
From 2022/23 onwards, normal eligibility rules apply and your employer must have required you to work from home. Submit backdated claims via form P87 or through Self Assessment.
Working From Home Tax Relief: Detailed Guidance
What Counts as Additional Household Costs
When using the exact calculation method, you can only claim for the additional costs of working from home, not your entire household bill. Eligible additional costs include the increased electricity for your computer, monitor, lighting, and heating the room you work in; increased gas or heating oil for keeping your home office warm during working hours; a proportionate share of broadband costs used for work; and increased water usage if applicable. You cannot claim for costs that would exist regardless of working from home, such as your mortgage or rent, building insurance (unless specifically increased for business use), or the base cost of council tax.
The key test HMRC applies is whether the expense would not have been incurred, or would have been lower, if you were not working from home. Keeping a log of your working hours and a separate record of utility bills before and during home working can strengthen your claim.
Calculating Business Use Proportion: Methods Accepted by HMRC
There are several acceptable methods for calculating the business proportion of your household costs. The room method divides costs by the number of rooms in your home (excluding bathrooms and hallways). If you have a dedicated office in a 5-room house, your room proportion is 20%.
The area method uses floor space: if your office is 12 square metres out of 90 square metres total, your proportion is 13.3%. The time method accounts for when the room is used for business versus personal purposes. If you work 8 hours a day, 5 days a week, the time proportion is approximately 33% (40 hours out of 112 waking hours per week).
Most accountants recommend combining the room and time methods: room proportion multiplied by time proportion gives the most defensible figure. For example, 20% room x 33% time = 6.6% of total household costs. HMRC does not prescribe one specific method, but you must be able to justify your calculation if questioned.
Equipment and Furniture Claims
If your employer requires you to work from home and does not provide the necessary equipment, you can claim tax relief on items bought for work purposes. This includes desks, ergonomic chairs, computer monitors, keyboards, webcams, printers, stationery, and specialist software. The items must be used "wholly, exclusively and necessarily" for your employment.
If an item has dual use (e.g., a laptop used for both work and personal browsing), you can only claim the business proportion. Items costing less than £2,500 each can usually be claimed in full in the year of purchase under the Annual Investment Allowance. Note that if your employer reimburses you for equipment, you cannot also claim tax relief. Equipment claims are made separately from the £6/week flat rate allowance, so you can claim both the flat rate (or actual costs) for running expenses plus the full cost of business equipment.
Common Mistakes That Can Invalidate Your Claim
HMRC has been scrutinising working from home claims more closely since the end of the blanket COVID-19 eligibility. Common mistakes that can lead to rejected claims or enquiries include: claiming when you choose to work from home rather than being required to; claiming when your employer provides an office that you could use but prefer not to; claiming for expenses that are not genuinely additional (such as your full broadband bill when you would have paid it anyway); failing to keep receipts when using the exact calculation method; claiming both the flat rate and actual expenses (you must choose one method per tax year); and claiming for years when you were not actually working from home. If HMRC opens an enquiry into your claim, you have 30 days to provide supporting evidence. Getting it wrong could mean repaying the relief plus interest, so be honest and conservative in your claims.
Employer-Provided Working From Home Payments
Some employers pay a working from home allowance directly to employees. Under HMRC rules, employers can pay up to £6 per week (£26 per month) tax-free without requiring any supporting evidence from the employee. This payment does not need to be reported on form P11D.
If the employer pays more than £6 per week, the excess is taxable as earnings unless the employee can provide evidence that their actual additional costs exceed the payment. Many large companies have implemented structured home working policies that include a monthly allowance of £26 or less, which is the simplest and most compliant approach. Where an employer does not make any payment, the employee can make their own claim to HMRC as described above. Employers should document their home working arrangements clearly, specifying which roles require home working, to support any HMRC enquiry into employee claims.
Impact of Working From Home on Other Tax Matters
Working from home can affect several other tax areas beyond the direct relief claim. If you use part of your home exclusively for business, this could technically create a business rates liability on that part of the property, although in practice HMRC rarely pursues this for employees with a simple home office. For council tax, you may be eligible for a discount if part of your property is used solely for business purposes, though this varies by local authority.
If you are a landlord working from home, your mortgage interest restriction rules still apply as normal. For company directors who own their home and charge their company rent for using a room, the rental income must be declared on their Self Assessment return, but they can offset a proportion of household costs against it. This arrangement can be tax-efficient but must be set up properly with a formal licence agreement between the director and the company.
Pro Tips for Accurate Results
- Double-check your input values before calculating
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- For complex calculations, break them into smaller steps
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Understanding Your Results
Our Working From Home Tax Relief Calculator provides:
- Instant calculations - Results appear immediately
- Accurate formulas - Based on official UK standards
- Clear explanations - Understand how results are derived
- 2025/26 updated - Using current rates and regulations
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