Using a Family Member’s Tax Band: What’s Allowed, and What HMRC Watches
Transferring income to a spouse or adult child in a lower tax bracket might sound like simple, legal tax planning — and in many cases, it is. But HMRC has clear boundaries between acceptable planning and arrangements it considers to be income shifting or artificial avoidance.
In 2025/26, with the personal allowance frozen at £12,570, the basic rate band still capped at £50,270, and dividend and capital gains allowances cut sharply, there’s more incentive than ever for families to explore how to use all available tax bands.
This post explains what you can and can’t do when trying to make use of a spouse’s or child’s allowances — and where HMRC is most likely to challenge.
Why Use Another Person’s Tax Band?
In the UK, individuals are taxed separately. Each person has access to:
- A personal allowance (£12,570 in 2025/26)
- A basic rate band (taxed at 20% or 8.75% for dividends)
- A dividend allowance (£500 in 2025/26)
- A capital gains tax (CGT) annual exemption (£3,000 in 2025/26)
So if one spouse has no income and the other earns £80,000, there is an obvious incentive to share income, assets, or gains to reduce the overall family tax bill.
But doing this improperly can attract HMRC scrutiny under several anti-avoidance rules.
Strategy 1: Transferring Assets to a Spouse — Generally Allowed
You can transfer assets such as shares, property, or savings to a spouse or civil partner with no immediate tax consequences.
This allows the receiving spouse to:
- Receive future dividends or interest
- Report future capital gains
- Use their personal allowances and lower tax bands
There is no CGT or income tax on the transfer itself — as long as you are legally married or in a civil partnership, and living together at the time.
Example:
-
Alex owns shares that pay £10,000 in dividends per year.
- Their spouse Taylor has no income.
- Transferring the shares to Taylor allows the income to be taxed in Taylor’s name — using their £500 dividend allowance, £12,570 personal allowance, and basic rate band (8.75%).
This can save over £3,000 per year in tax if done correctly.
Tip: Always use a formal transfer (stock transfer form or deed of gift) and consider declaring a trust if only the income, not ownership, is being transferred.
Strategy 2: Forming a Partnership or Company with a Spouse — Scrutinised
Where both spouses are genuinely involved in a business — even if not equally — it can be legitimate to share profits via:
- A partnership (formal or informal)
- A limited company with share ownership
But HMRC may challenge artificial arrangements, especially where:
- One spouse doesn’t actually do any work
- The business income is simply being “routed” through the lower earner
- Share classes are manipulated purely to allocate income
This was tested in the landmark Arctic Systems case (Jones v Garnett), where the court upheld a husband-and-wife share structure — but the case led to HMRC tightening enforcement under the settlements legislation.
The key principle: There must be genuine ownership and/or involvement.
If your spouse owns shares in name only, and doesn’t contribute cash, skill, or risk, HMRC could invoke anti-avoidance rules to tax the income on the higher earner instead.
Strategy 3: Shifting Income to Children — High Risk
Gifting income to minor children (under 18 and unmarried) is highly restricted.
Any income over £100 per year, per parent that arises from an asset given by the parent is taxed on the parent, not the child.
So if you:
- Transfer shares to your 16-year-old child
- Those shares produce £1,000 in dividends
Then HMRC will treat that income as yours — unless the capital came from a grandparent or someone else.
Exception: This rule doesn’t apply to capital gains — so if a child sells an asset and makes a gain, that can still fall under their CGT allowance.
Tip: For income-shifting to adult children (18+), these restrictions do not apply — but you must still avoid artificial arrangements.
Strategy 4: Jointly Held Property — Understand the Default Rules
For property income, HMRC assumes that married couples who jointly own a property share the income 50:50, regardless of the actual ownership percentage.
To use a different split — for example, 90:10 — you must:
-
Own the property in unequal shares
-
Complete and submit a Form 17 to HMRC with evidence (e.g. a declaration of trust)
This allows income to be taxed in proportion to actual ownership — often used where one spouse is a basic rate taxpayer and the other pays higher rates.
Note: This rule only applies to married couples. Unmarried couples can apportion income however they like, based on ownership or agreement.
What HMRC Watches Closely in 2025/26
HMRC’s systems flag potential abuse of allowances where:
- Gifts to spouses appear to be purely income-shifting
- Children receive large dividends or interest from parent-owned assets
- Businesses issue new alphabet shares to spouses for no value or effort
- Form 17 claims don’t match Land Registry ownership
- Online declarations or returns suggest one party is passive in the business
With digital reporting and increasing cross-checking (including platforms and banks), HMRC can more easily identify and investigate suspicious patterns.
Is This Planning or Avoidance?
HMRC generally accepts income sharing between spouses if:
- It reflects genuine ownership or involvement
- The structure has commercial reality
- Assets are fully transferred, not just income rights
- There’s no circularity (e.g. dividends gifted back)
However, if you create structures solely to reduce tax, with no real transfer of control, risk, or capital, HMRC may invoke:
- Settlements legislation
- General Anti-Abuse Rule (GAAR)
- Disclosure of Tax Avoidance Schemes (DOTAS)
Summary: Smart Use of Family Allowances — with Care
Using a family member’s tax band can be an effective way to reduce your household tax burden — but only when done transparently and within the rules.
You can safely:
Transfer shares or assets to a spouse
Use Form 17 to split rental income based on actual ownership
Structure companies or partnerships with genuine contribution from each person
Help adult children use their allowances (if not linked to parental income)
Avoid:
Gifting income but retaining control over the capital
Transferring assets to minor children expecting tax-free income
Using contrived or circular routes to shift income
Issuing shares with no real value or involvement
