Freelance App Developer Tax UK 2026/27: Contract Work Plus Store Income
Freelance mobile app developers mixing client contracts with their own App Store and Play Store income face a distinctive dual-income tax picture. Full worked example on £42,000 combined turnover.
A dual income stream with a genuinely mixed tax picture
Freelance app development often produces two quite different income streams under one trading business: client contract work (building apps for other businesses, typically invoiced and paid in GBP) and your own app store income (in-app purchases, subscriptions or ad revenue from apps you own, often paid in USD and net of a 15-30% platform commission). Both count as ordinary trading income, but the record-keeping demands — currency conversion, matching store sales reports to bank deposits, tracking commission already deducted — are more involved than for a single-income-stream freelancer.
Self-Employed Tax Calculator
Calculate income tax, Class 2 and Class 4 National Insurance for self-employed and sole traders for 2025/26.
Open Self-Employed Tax calculatorWorked example: freelance app developer, £42,000 combined turnover
Gross income: £42,000 (£28,000 from client contract work, £14,000 net from own apps' in-app purchases and subscriptions after Apple/Google commission already deducted)
Deductible expenses:
- Mac, iPhone and Android test devices (capital allowance): £1,800
- Apple Developer Program and Google Play Console fees: £120
- Software licences and cloud services (backend, analytics, CI/CD): £1,200
- Home office (proportion of utilities/broadband): £900
- Professional indemnity insurance: £300
- Accountancy fees: £280
- Total expenses: £4,600
Taxable profit: £42,000 − £4,600 = £37,400
Income tax: (£37,400 − £12,570) × 20% = £24,830 × 20% = £4,966
Class 4 NI: (£37,400 − £12,570) × 6% = £24,830 × 6% = £1,490
Total tax and NI: £6,456
Take-home: £42,000 − £4,600 − £6,456 = £30,944
Contractor Take-Home Pay Calculator (IR35)
Compare take-home pay outside IR35 (Ltd), inside IR35 and umbrella for any UK day rate. Side-by-side 2026/27 breakdown.
Open Contractor IR35 calculatorHandling store income correctly
The single most common mistake freelance app developers make is mishandling currency and commission. Apple and Google pay out in the currency of the store where the sale happened (often USD), converted and remitted to your UK bank account, already net of their commission — you never see the gross sale price or the commission amount separately. The correct approach is to record what actually lands in GBP in your bank account (or use the store's own sales reports converted at a consistent exchange rate basis), rather than trying to gross up for commission that was never yours to begin with.
Hardware: Mac, test devices and the AIA
iOS development requires a Mac, and thorough testing across both platforms means keeping a small stable of test devices spanning different iPhone and Android models and screen sizes. All of this qualifies as plant and machinery for the Annual Investment Allowance, meaning the full cost is deducted in the year of purchase. For a developer refreshing their Mac and test device fleet in a strong-profit year, timing that purchase deliberately reduces that year's tax bill.
Contract work vs own-app income: a comparison
| Client contract work | Own app store income | |
|---|---|---|
| Payment currency | Usually GBP, direct invoice | Often USD/EUR, converted by the platform |
| Net of commission already? | No — you invoice the full amount | Yes — Apple/Google commission already deducted |
| Predictability | Higher — agreed scope and rate | Lower — depends on downloads/engagement |
| IR35 relevance | Possible if working through a limited company on a long contract | Not applicable — this is your own product, not a client engagement |
| VAT treatment | Standard UK VAT rules if registered | Often handled by the platform as seller of record — check your specific setup |
Deductible expenses checklist
- Mac, test devices, peripherals (AIA)
- Apple Developer Program and Google Play Console fees
- Software licences: IDEs, backend/cloud services, CI/CD, analytics
- Home office proportion of utilities/broadband
- Professional indemnity insurance
- Accountancy fees
- App Store optimisation and marketing costs
Filing and paying
Register for Self Assessment once gross income exceeds £1,000, keep contract invoices and app store sales reports in clearly separate records (even though they combine into one turnover figure), and file online by 31 January following the tax year end, paying any income tax and Class 4 NI owed by the same date.
Frequently asked questions
How is App Store and Play Store income taxed differently from contract work?
It isn't taxed differently — both are simply trading income to a self-employed app developer, combined into one total turnover figure before expenses. The practical difference is in record-keeping: store income arrives net of Apple's and Google's commission (typically 15-30%) and is often paid in a foreign currency, needing conversion to GBP and careful matching against store sales reports.
Do I need to declare income after Apple or Google have already taken their commission?
Yes — you declare the net amount you actually receive as your trading income (i.e. after the platform's commission), since you never receive the commission portion in the first place. You don't need to separately account for the commission as an expense, because it's already excluded from the income figure you're declaring.
Can I claim Apple Developer Program and Google Play Console fees?
Yes, the Apple Developer Program annual fee (currently around $99/year) and the one-off Google Play Console registration fee are fully deductible business costs, converted to GBP at the exchange rate applicable when paid.
How much tax does an app developer pay on £42,000 combined turnover?
After typical expenses of around £4,600 (hardware, developer fees, software licences, home office), taxable profit is roughly £37,400. Combined income tax and Class 4 NI comes to around £6,436.
Should I set up a limited company to hold my own apps?
Worth considering once your own app store income is substantial and growing, since a limited company can be useful for separating personal liability from app-related risk (data protection claims, in-app purchase disputes) and can improve tax efficiency at higher profit levels via the salary/dividend split — but for modest or unpredictable app revenue alongside contract work, sole trader status is usually simpler.
Can I claim my Mac, iPhone and testing devices?
Yes, a Mac (required for iOS development), test devices (iPhones, Android handsets of various models) and other hardware used for the business typically qualify for the Annual Investment Allowance, giving a 100% deduction in the year of purchase.
What if my apps also generate advertising revenue through a network like AdMob?
Advertising revenue from your own apps is simply more trading income, added to your store sales and contract income for the same total turnover figure — no different tax treatment, though again it's often paid in foreign currency and needs converting to GBP.
Do I need to register for VAT on app sales?
App Store and Play Store sales to consumers are generally handled by Apple and Google acting as the seller of record in many territories for VAT purposes, which can simplify your own VAT position — but this varies by exact sales structure and territory, so it's worth checking your specific arrangement rather than assuming no VAT registration is ever needed once your overall turnover, including contract work, approaches £90,000.
Can I claim software licences and cloud service costs?
Yes, IDE licences, cloud hosting/backend services (push notification services, analytics, crash reporting), and CI/CD tooling used for app development and contract work are all fully deductible running costs.
Try the calculators
Self-Employed Tax Calculator
Calculate income tax, Class 2 and Class 4 National Insurance for self-employed and sole traders for 2025/26.
Contractor Take-Home Pay Calculator (IR35)
Compare take-home pay outside IR35 (Ltd), inside IR35 and umbrella for any UK day rate. Side-by-side 2026/27 breakdown.
VAT Calculator
Add or remove VAT from any amount. Supports 20%, 5% and 0% UK VAT rates.
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