Does income from overseas need to be declared when it is transferred to the UK? Who can use the 12% channel?

This question is asked dozens of times a year, and almost always in the same wording: How much can be remitted, how many points will be deducted when remitting, and whether splitting into several transactions would be more stable. Three things determine the answer, none of which are in the question.

The moment the money arrives, it does not generate tax.

Question: I have been saving money under my name for many years, and I want to transfer this money to a UK account. Do I need to pay tax on this money?

The UK does not impose a tax on "inflows." What is taxed is the underlying income or capital gain itself, as well as in which tax year it was generated and whether you were a UK tax resident that year. Starting from 6 April 2025, the remittance basis will be abolished, and all UK tax residents will be taxed on a worldwide arising basis for their income and gains; overseas income must be declared in the tax year it was generated, regardless of whether the money remains overseas or is brought into the UK that year. Savings that were already taxed years ago and are of a principal nature will not generate tax again just because they are transferred across borders once. Therefore, "transferring small amounts" has no impact on the tax outcome; it only changes the frequency of inquiries from the bank.

Question: The bank asks me to explain the source of the funds. What is considered sufficient?

This is an anti-money laundering check, not a tax check. There is no fixed amount threshold. Large amounts, first-time transactions, or deposits that do not match the account's transaction history may trigger it. Materials that can pass in one go usually form a closed chain: where the money originally came from (sales contract and tax payment documents, salary and dividend records, gift explanation), which account it was transferred from, and the relationship between the sender and you. The procedures on the Chinese side can be handled by preparing the corresponding proof documents according to current regulations.

Cash is calculated separately: If the total of all currencies exceeds £10,000, it must be declared when entering Great Britain. Failure to declare may result in seizure and a maximum civil fine of £5,000.

Do I need to declare overseas income? Note down the two dates first.

Question: There is another house in the country that is rented out, earning a few thousand pounds per year. Do I need to declare this in the UK?

Yes. For individuals with foreign income for the 2025/26 tax year (from April 6, 2025, to April 5, 2026), the deadline to register for self-assessment is October 5, 2026, which was two days ago; the deadline for online filing and payment is January 31, 2027. This registration step is easy to miss. It's still better to register now than to do nothing, as penalties are linked to potential underpayment of taxes.

Newcomers to the UK are informed that there is a four-year tax-free route: if you have been non-UK tax resident for at least 10 consecutive tax years before arriving in the UK, you can apply for the FIG rules for the first 4 years, and your foreign income and gains will be exempt from UK tax. The cost is written in gov.uk FIG guidance and the 2024 Non-Residence Reform Technical Note — once claimed, your personal allowance of £12,570 and capital gains annual exemption of £3,000 will be entirely lost, and it will apply to all your income for that year, not just the foreign part.

My judgment is that people whose main income is UK salary, and who have only a few thousand pounds in rent or interest from overseas should not declare FIG. Giving up the £12,570 tax-free allowance to get a few thousand pounds in tax exemption is mostly a net loss; in most cases, it's better to normally declare on SA106 and use the double taxation relief to offset taxes already paid overseas. Those who truly need to calculate FIG are a small group of people who also have large amounts of disposal or operating income overseas, and they need to recalculate year by year.

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Question: I heard that before 2028, only 12% is charged for remitting old foreign currency back. Can I use it?

This arrangement is called the Temporary Repatriation Facility, with a rate of 12% for the 2025/26 and 2026/27 tax years, increasing to 15% for 2027/28. HMRC manual RDRM73200 sets out three conditions that must all be met: the specified year is a UK tax resident, at least one previous tax year was taxed under the remittance basis, and there is overseas income or gains claimed under the remittance basis prior to 2025/26. The procedure is to make a designation on the self-assessment tax return; once designated and taxed, this amount is thereafter treated as capital, and any subsequent inflow into the UK will not generate further income tax or capital gains tax, and does not need to be brought in within the window period.

It is not the "uniform preferential tax rate for redeeming old money before 2028." Those who have never declared under the remittance system do not have qualifying overseas capital to specify, and the principal remitted into their own account does not generate this tax, so they don't need this door; while those who are truly applicable should note that TRF taxes cannot be offset by taxes already paid overseas.

Looking at these three paragraphs together, the preparation required for transferring funds to the UK is never just one tax rate, but a set of documents that match each other: the source of the money, which tax year it belongs to, and your tax residency status for that year. This set of documents is the same when paying for a house, applying for a mortgage, and in the future when asked about it.

This article is for reference only. Please consult a licensed professional regarding your personal tax and visa matters.

[Data source] gov.uk "Check if you can claim the 4-year foreign income and gains regime"; HMRC manual RDRM72100, RDRM73200 (Temporary repatriation facility); gov.uk "Take cash in or out of the UK"; gov.uk "Self Assessment tax returns: deadlines"

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