How much tax relief can I claim for working from home?

The amount of tax relief you can claim for working from home depends on whether you use the simplified expenses method or calculate your actual costs, as well as any qualifying home office setup expenses. Both self-employed individuals and limited company directors may be eligible, but the rules differ and change periodically, so always check the latest guidance on GOV.UK.

This guide explains the two main approaches, how to decide which suits your situation, what records to keep, and how to handle home office equipment and improvements. The information is general and based on standard UK tax principles for early-stage founders and e-commerce sellers.

Understanding tax relief for home working

Working from home can create allowable business expenses that reduce your taxable profits. HMRC allows two main ways to claim: a flat rate simplified expense or detailed actual costs. The choice depends on your circumstances, such as how much space you dedicate to work and whether you incur significant extra costs for utilities or equipment.

Simplified expenses provide an easy weekly flat rate without receipts. The actual cost method requires you to calculate the proportion of your home used for business and the extra costs incurred. Neither method is universally better; review your records to see which gives a fairer result. Rates and eligibility criteria can change, so verify current details on GOV.UK before claiming.

The simplified expenses method

This method lets you claim a fixed amount per week based on the number of hours you work from home. It covers additional costs for heating, electricity, water, and internet use. You do not need to measure your workspace or keep utility bills.

Decide how many hours per week you typically work from home for your business.
Apply the appropriate flat rate for those hours.
Claim the total for the year by multiplying the weekly rate by the number of weeks you worked from home.
You can still claim separately for business phone calls and dedicated business equipment.

Keep a simple record of the days or hours worked at home. This approach suits many e-commerce sellers who run their operations from a spare room or kitchen table and want to minimise bookkeeping time.

The actual cost method explained

With this method you calculate the exact proportion of your household costs that relate to business use. First establish the percentage of your home used for work, then apply that percentage only to the additional costs caused by your business activities.

Measure the floor area of the workspace compared with the total floor area of the house, or count the number of rooms if they are roughly equal in size. Only claim for periods when the space is used exclusively for business. Track bills for gas, electricity, water, council tax, mortgage interest, and rent if applicable. Deduct any personal use portion and claim only the business element. This method can produce a higher claim if your costs are genuinely elevated, but it demands more detailed records and calculations.

Home office setup costs and capital allowances

You can usually claim for furniture, desks, chairs, computers, printers and similar items bought specifically for business use. These are treated as capital assets and may qualify for capital allowances or the annual investment allowance, which lets you deduct the cost in the year of purchase rather than spreading it over several years.

Record the purchase date, supplier, amount and description for each item. If an item is used partly for personal purposes, apportion the cost. Improvements to your home such as building a dedicated office or installing new wiring may not be immediately deductible and could affect your capital gains position when you sell the property. Check HMRC guidance on capital versus revenue expenditure. Retain all invoices and consider speaking to an accountant if the amounts are significant.

Record keeping and practical steps

Good records protect your claims during any HMRC review. For simplified expenses, note the hours worked from home each week in a spreadsheet or diary. For actual costs, keep copies of all household bills, floor plans or room measurements, and a log showing business use of each area.

List every home-related expense you intend to claim.
Calculate the business percentage using floor area or room count.
Subtract any non-business use, such as evenings spent on personal activities in the same space.
Enter the allowable figure on your Self Assessment tax return or company accounts.
Store evidence for at least six years.

Use accounting software to categorise costs and generate reports. Review your method each tax year; you can switch between simplified and actual if your working pattern changes. E-commerce sellers who also store stock at home should separate storage costs from workspace claims.

Limited companies versus self-employed

Directors of limited companies can claim home office costs through the company, but the company must reimburse the director or pay the expense directly. The reimbursement must be on a commercial basis and supported by records. Self-employed sole traders claim directly on their Self Assessment.

Company claims may involve reporting the benefit to the director if the arrangement is not handled correctly. Many early-stage founders choose the simplified method for simplicity when first incorporating. Always ensure your company records show clear separation between personal and business use. Rules on what can be claimed through a limited company evolve, so confirm the latest position on GOV.UK or with Companies House where relevant.

Common pitfalls and when to seek help

A frequent mistake is claiming the full amount of a bill instead of the business proportion, or claiming for periods when the space is not used exclusively for work. Another error is forgetting to adjust claims when you stop working from home for part of the year. Over-claiming can lead to corrections and penalties, while under-claiming reduces cash available for growing your startup.

If your turnover is increasing or you have complex arrangements such as renting part of your home, consider consulting a qualified accountant. They can help you apply the rules accurately to your specific situation. Free resources on GOV.UK include worked examples and online tools for calculating proportions. Regular bookkeeping helps you spot trends in home working costs and improves overall cash flow management.

Frequently asked questions

Can I claim tax relief if I only work from home a few days a week?

Yes. With the simplified method you claim for the exact number of weeks or hours you work from home. With actual costs you apportion bills according to the time the space is used exclusively for business. Keep clear records of your working pattern so the claim reflects reality. Check current GOV.UK guidance because eligibility can change.

Do I need receipts for the simplified expenses method?

No receipts are required for the flat rate itself. You must still keep evidence of the hours or days worked from home. Separate receipts are needed for any additional claims such as business equipment or phone calls. This makes the method popular with busy e-commerce sellers who prefer minimal paperwork.

What home office equipment can I claim for?

Desks, office chairs, computers, monitors, printers, lighting and shelving bought for business use are typically allowable. You can claim the full cost in one year under the annual investment allowance or use writing down allowances. Apportion if the item is also used privately. Retain purchase invoices and note the business percentage applied.

How does working from home affect capital gains tax on my house?

Using part of your home exclusively for business over several years can affect private residence relief when you sell. The impact depends on the proportion of the property used and the length of time. Minor or occasional use usually has little effect. Review the latest HMRC rules on private residence relief before making significant changes to your workspace.

Can my limited company pay me rent for using my home office?

Yes, but the arrangement must be realistic, properly documented, and reflect a commercial rate for the space used. The company claims the rent as an expense and you declare it as rental income. This can sometimes be more tax efficient but adds complexity. Seek professional advice to avoid unintended tax consequences.