Referral Code Tax Guide UK: Do You Pay Tax on Referral Bonuses?

UK Tax on Referral Bonuses: What You Need to Know

As referral income grows in the UK, understanding the tax implications becomes important. This guide provides clear, practical guidance on how HMRC treats referral bonuses and what you need to do depending on how much you earn.

The Quick Answer

If your total miscellaneous income from referral bonuses, cashback, and similar rewards is under £1,000 per tax year (6 April to 5 April), you owe no tax and do not need to report anything. This is covered by the trading allowance.

If you earn over £1,000, you need to register for Self Assessment and declare the income.

What Counts as Taxable Referral Income?

HMRC considers the following as taxable miscellaneous income:

• Cash bonuses paid to your bank account or PayPal for referring friends
• Account credits that can be withdrawn as cash
• Gift cards and vouchers with a clear monetary value
• Free shares from investment platforms (taxed at market value when received)

What is generally not taxable:

• Cashback on your own purchases (treated as a discount)
• Welcome bonuses you receive for signing up yourself (promotional incentive)
• Non-monetary loyalty points with no cash value

The £1,000 Trading Allowance

Key facts about the trading allowance:

• It covers all miscellaneous trading income — not just referrals
• It is per person, per tax year
• It is separate from your employment Personal Allowance (£12,570)
• You cannot use the allowance and claim expenses — choose one or the other
• No need to register or declare anything if you stay below £1,000

If You Earn Over £1,000

When your referral income exceeds the trading allowance, you have two options:

1. Use the trading allowance: Deduct £1,000 from your total income and pay tax on the remainder at your marginal rate.
2. Deduct actual expenses: If you have legitimate business expenses (internet costs, phone bill portion, etc.), deduct these instead. Choose whichever gives the better result.

You need to register for Self Assessment and file a tax return by 31 January following the end of the tax year.

Free Shares and Investment Referrals

Free shares from investment platforms have two tax considerations:

• Income tax: The market value when you receive the share counts as miscellaneous income (trading allowance applies).
• Capital Gains Tax: If you later sell the share at a profit, the gain is subject to CGT. The annual CGT allowance is £3,000 (2025/26). Shares held in an ISA are exempt from both CGT and dividend tax.

Record Keeping

Keep a simple record of all referral income received:

• Date of payment
• Company and programme name
• Amount received (in pounds)
• Type of reward (cash, gift card, shares)

HMRC requires records to be kept for at least five years after the filing deadline. A simple spreadsheet is sufficient. Save confirmation emails and screenshots as backup evidence.

Practical Scenarios

Scenario A: Casual Referrer

Emma earns £450 in referral bonuses across the tax year from various banking and fintech referrals. She is well within the £1,000 allowance. No action needed — she keeps a basic spreadsheet for her own records.

Scenario B: Active Referrer

James earns £2,800 in referral bonuses. He registers for Self Assessment and uses the trading allowance. He pays tax on £1,800 (£2,800 minus £1,000). As a basic-rate taxpayer, he owes £360 (20% of £1,800).

Scenario C: High Earner

Sophie earns £6,500 from referral programmes. She has £1,200 in legitimate expenses. She compares both options: using the trading allowance (tax on £5,500 = £1,100) versus deducting expenses (tax on £5,300 = £1,060). She chooses to deduct expenses because it saves £40.

National Insurance

If HMRC considers your referral activity a trade rather than occasional income, Class 2 and Class 4 National Insurance may apply. For most casual referrers, this is not an issue. If you are actively promoting referral codes as a business activity, seek professional advice on your NI obligations.

Getting Professional Advice

This guide provides general information based on current HMRC rules. If your referral income is substantial (over £5,000 per year) or your tax situation is complex, consult a qualified accountant. The cost of professional advice is typically far less than any tax mistakes it prevents.

For more on referral earnings potential, use the referral earnings calculator to estimate your annual income and plan accordingly.