Interspousal Transfers: A Tax-Saving Strategy for Couples Before the Deadline
As the tax year approaches its conclusion on April 5, married couples and civil partners have a unique opportunity to significantly reduce their tax bills through a method known as interspousal transfers. This financial strategy allows partners to move assets between each other, leveraging two sets of tax-free allowances to minimize overall tax exposure for the family.
How Interspousal Transfers Work to Maximize Allowances
Interspousal transfers enable couples to utilize both partners' personal savings allowances, dividend allowances, and capital gains exemptions. By shifting assets, they can ensure that income and gains are taxed at the lower rate applicable to the partner with the more favorable tax status. This approach is particularly beneficial for couples where one partner is a higher-rate taxpayer and the other is a basic-rate taxpayer.
Real-World Examples of Potential Tax Savings
Alice Haine, a personal finance analyst at Bestinvest by Evelyn Partners, provides concrete examples to illustrate the savings possible with interspousal transfers.
Personal Savings Allowance Scenario:
Consider a husband earning £65,000 annually as a higher-rate taxpayer and a wife earning £25,000 as a basic-rate taxpayer. Both have exhausted their ISA limits. The husband holds £50,000 in a savings account, generating £2,297 in interest at a 4.5% rate.
- Without an interspousal transfer, the husband's £500 personal savings allowance means £1,797 of interest is taxed at 40%, resulting in £718 in tax annually.
- With an interspousal transfer, moving the savings to the wife's name allows her £1,000 allowance, reducing the taxed interest and applying a 20% rate, leading to only £259 in tax. This results in a total saving of £459.
Capital Gains Tax Scenario:
In the same couple's case, the husband holds shares with a £12,000 unrealised gain, where £3,000 is exempt from Capital Gains Tax (CGT) and £9,000 is taxable.
- Without a transfer, the £9,000 gain is taxed at 24% for higher-rate taxpayers, amounting to £2,160 owed to HMRC.
- With a transfer, half the shares are moved tax-free to the spouse. Each partner can then use their £3,000 exemption, reducing the taxable gain to £6,000. The wife's share is taxed at 18% as a lower-rate taxpayer, costing £540. The total tax paid becomes £1,260, saving the couple £900.
The Critical Catch to Consider
However, Haine emphasizes a crucial warning for couples considering this strategy. Before transferring shares, funds, or cash to a partner, it is essential to remember that the recipient becomes the full, legal owner of the assets. This move is unwise if the relationship is not on stable ground, as it could lead to complications in case of separation or divorce.
Interspousal transfers offer a powerful tool for tax reduction, but they require careful consideration of both financial and relational stability. Couples should assess their individual circumstances and consult with financial advisors to maximize benefits before the tax year deadline.



