How to Build Passive Income as an Internationally Mobile Person

The appeal of passive income — income that arrives without requiring your active, daily effort — is universal. For internationally mobile people, it has a specific additional dimension: the income must be portable. It should work regardless of which country you are based in, and ideally it should not create excessive tax complexity in every new jurisdiction you move to.

This guide examines the main passive income streams available to UK-connected internationally mobile individuals, how each is taxed across different residency positions, and how to think about building a portfolio of streams that travels with you.

What "Portable Passive Income" Means

Passive income is not the same as effort-free income. A buy-to-let property generates passive income, but it requires tenant management, maintenance, agent relationships, and legal compliance. Dividend income from a share portfolio requires portfolio management. An offshore bond requires ongoing investment oversight.

What makes income "portable" for an internationally mobile person is:

• It does not depend on your physical presence: you can collect rental income from a UK property while living in Cyprus. You can receive dividends from a global equity fund while living in Thailand.
• It is legally receivable in the jurisdictions you inhabit: some income types create complex legal or tax issues in certain countries (for example, UK pension income during pre-retirement years has different rules in different jurisdictions).
• It does not require active management that is jurisdiction-specific: running a UK business that requires your day-to-day presence in the UK is not portable.

Stream 1: UK Buy-to-Let Rental Income

Rental income from UK property is one of the most common passive income streams for British expats. The property stays in the UK, the income crosses borders.

Tax treatment varies significantly by residence:

• As a UK non-resident landlord, you must apply for Non-Resident Landlord approval from HMRC to receive rent gross (otherwise your agent deducts 20% basic rate tax at source). You file a UK Self Assessment return and pay UK income tax on the rental profit.
• Your country of residence may also tax the income — but a double taxation agreement (DTA) with the UK typically provides a credit for UK tax paid, preventing genuine double taxation.
• Section 24 (the mortgage interest restriction) applies equally to non-resident landlords — interest is not deductible, only a 20% credit applies.

Rental income is relatively portable: the property remains in the UK, income is taxed there, and treaty provisions manage the cross-border position. The challenge is management — reliable letting agents are essential when you cannot visit frequently.

Stream 2: Dividend Income from a Global Equity Portfolio

A well-diversified portfolio of equities held in a general investment account, ISA, or offshore bond can generate dividend income regardless of your physical location. The tax treatment depends on the wrapper:

• ISA: dividends within an ISA are completely free from UK income tax. The ISA wrapper is preserved when you move abroad (though you cannot make new contributions while non-UK resident). This is one of the most genuinely portable income structures.
• General investment account (GIA): dividends above the dividend allowance (£500 from 2024/25) are taxable as UK income — potentially at 8.75%, 33.75%, or 39.35% depending on your rate. If you are non-UK resident, the taxability of dividends depends on the DTA and the nature of the income (foreign-source dividends from a non-UK domicilied company are generally not taxable in the UK for non-residents).
• Offshore bond: dividends roll up free of UK tax inside the bond. No annual income tax liability — only taxed on eventual encashment. This makes it highly portable and tax-clean annually.

For expats, the offshore bond structure is often the most practical for dividend-generating investments — no annual tax filing in the UK related to the investment income, no complexity in the host country each year.

Stream 3: Interest on Cash Savings

Interest on cash savings has become genuinely meaningful income again since rates rose from 2022. As of 2026, competitive instant-access savings accounts and fixed-term deposits offer materially positive real rates in some currencies.

Tax on savings interest:

• UK non-residents are generally not taxable in the UK on savings interest from non-UK banks or accounts (the UK has a source-based approach for most savings income).
• Interest from UK banks may be subject to UK withholding, depending on the treaty position and whether you have notified the bank of non-residency.
• Your country of residence taxes interest on a worldwide basis in most cases — check the local rules.

Offshore fixed deposits in Isle of Man, Guernsey, Jersey, Gibraltar, or Malta-based institutions are popular with expats who want the security of sterling-denominated deposits with competitive rates and outside UK bank regulation (avoiding potential UK-related issues). The regulatory protection of these jurisdictions differs from the UK's FSCS — understand the deposit protection before committing large sums.

Stream 4: The Offshore Bond 5% Withdrawal

The offshore investment bond's 5% annual withdrawal allowance provides a structured mechanism for tax-deferred income that works across borders. Each year, you can withdraw up to 5% of the original investment without triggering an immediate UK tax charge. This is cumulative — if you do not take 5% one year, it carries forward.

For a £200,000 bond, that is £10,000 per year of income with no immediate UK income tax liability. The eventual tax is paid when the bond is encashed (or assigned), based on the total gain accumulated.

For internationally mobile individuals, this is a clean income stream: no annual UK tax filing event related to the withdrawal, and in many host countries, the tax treatment of bond income is deferred in the same way as in the UK (under treaty provisions, though this varies by country — take local advice).

Stream 5: UK State Pension

For those who have reached State Pension age and have a sufficient NI record, the State Pension is a genuinely portable, inflation-linked income stream. However, a critical issue applies: the "frozen pension" problem.

If you live in a country with which the UK does not have a reciprocal agreement for State Pension uprating (such as Canada, Australia, or South Africa), your State Pension is frozen at the level it was when you first claimed it (or when you first left the UK, depending on your situation). It does not increase with inflation. Over a 20-year retirement, this can represent a very significant real-terms reduction.

Countries with uprating agreements include all EU/EEA member states, the US, and some others. If you are planning to retire abroad and State Pension income forms part of your plan, the frozen pension issue must be factored in.

Stream 6: Private Pension Drawdown

For those who have reached age 55 (rising to 57 from 2028), pension drawdown provides flexible income from your pension fund. As an expat, the UK tax position on pension drawdown depends on the relevant DTA:

• In most countries, your private pension income is taxed in your country of residence (not in the UK) — which may mean a lower effective tax rate if your host country has a favourable tax regime.
• UK government service pensions (civil service, teachers, police, military) are taxable in the UK under most treaties, regardless of where you live.
• QROPS (Qualifying Recognised Overseas Pension Scheme) may be worth considering for those who have permanently left the UK and want their pension managed in the host country's framework. Note that a 25% Overseas Transfer Charge applies to most QROPS transfers; the EEA/Gibraltar exemption was abolished on 30 October 2024, and only the same-country-residence exemption now applies. Take regulated advice before proceeding.

Pension drawdown is highly portable conceptually but requires careful tax treaty analysis for each specific country.

Stream 7: Royalties and Intellectual Property

For creators, authors, inventors, and those who have built intellectual property — software, books, music, patents — royalty income can be genuinely passive and portable. IP income can be structured through appropriate corporate structures or simply received personally, depending on scale.

Tax on royalties is typically source-based in tax treaties — meaning the country where the IP was created or where the licensee is based often has taxing rights, regardless of where the IP owner lives. The specific rules depend on the treaty between the relevant countries and the type of IP. This is a complex area requiring specialist advice.

Building the Portfolio

A sensible passive income portfolio for an internationally mobile person typically combines several streams rather than relying on one. A possible framework:

• Baseline guaranteed income: UK State Pension (once eligible) and/or annuity income covering essential monthly expenses. These are guaranteed for life and remove longevity risk.
• Property income: one or two UK properties generating rental income through reliable agents. Provides income with some inflation linkage and capital growth potential.
• Investment income: ISA-sheltered dividend portfolio for tax-free income; offshore bond for tax-deferred accumulation; GIA for shorter-term investment needs.
• Cash reserve: six to twelve months of expenses in accessible accounts, held in currencies that match your regular spending.

The proportion of each stream depends on your residency, tax position, age, risk tolerance, and income requirements. There is no universal template — personal financial planning is the correct approach.

Compliance Note

Tax treatment of passive income streams varies significantly depending on your country of residence, the source of the income, and the applicable double taxation agreement. Rules change frequently. This article is for general information only and does not constitute financial, tax, or legal advice. You should seek advice from advisers qualified in both the UK and your country of residence before building your income strategy. The value of investments can fall as well as rise.

How Global Investments Can Help

Designing a portable income portfolio that works across multiple jurisdictions and different life stages is one of the core planning challenges for internationally mobile clients. Our advisers work with clients around the world to build income strategies that are tax-efficient, genuinely passive, and resilient to changes in residence. Contact our team to begin the conversation.