UK Accounting · Tax Planning
Proactive tax planning, across both systems
Tax planning is the legitimate, forward-looking arrangement of your affairs to manage tax efficiently — using available allowances, reliefs and timing within the rules. Unlike filing, which reports the past, planning shapes future outcomes, and the biggest savings usually come from decisions made before year-end. For individuals and businesses connected to both the US and UK, effective planning means coordinating both tax systems together, so an efficient move in one country does not create a costly problem in the other.
Tax planning is the part of accountancy that looks forward. Where a tax return records what already happened, planning is about arranging your affairs ahead of time — making the most of the allowances, reliefs and timing the rules provide, so your eventual tax position is as efficient as it legitimately can be.
The crucial point is timing: most of the meaningful steps have to be taken before the year-end, not at the point of filing. By the time a return is being prepared, the opportunities for that year have largely passed. Planning is what turns tax from a bill you react to into an outcome you have shaped.
And for anyone connected to both countries, it is where a US–UK firm matters most. A move that saves tax in the UK can trigger a problem in the US — and vice versa. Real cross-border planning weighs both systems together, which is exactly what we do.
Tax planning at a glance
- Nature
- Forward-looking, not reactive
- Goal
- Legitimate efficiency
- Best timing
- Before year-end
- Covers
- Income, business, investments
- Cross-border
- UK & US weighed together
- Not
- Aggressive avoidance
Who benefits from tax planning
- Business owners deciding how to extract profit efficiently
- Higher earners and those with complex income
- Investors and landlords with capital gains exposure
- US citizens and dual nationals living in the UK
- Owners of US-connected UK companies
- Anyone facing a major decision — a sale, a dividend, a move
What planning covers
For businesses and their owners, planning often centres on profit extraction — the balance of salary and dividends — alongside the timing of investment to make use of capital allowances, choice of business structure, and pension contributions. For individuals it can mean using allowances and reliefs fully, timing the realisation of gains, and structuring savings and investments sensibly.
Where cross-border planning earns its keep
This is the part generic accountants miss. A UK-efficient choice can be penalised under US rules: UK funds and ISAs can be PFICs for US tax; a UK company’s profits can be caught by GILTI and Form 5471; and pensions are treated differently on each side of the Atlantic. We plan with the US–UK treaty and both tax systems in view, so one country’s saving is not another’s liability.
Common mistakes we see
The recurring ones: leaving planning until the return, when the year’s opportunities have gone; making a UK-efficient decision that backfires in the US (or the reverse); not using allowances and reliefs before they reset at year-end; confusing legitimate planning with risky avoidance schemes; and making big moves — selling an asset, taking a large dividend — without modelling the tax first.
Planning, not avoidance
To be clear about our approach: this is legitimate planning — using the allowances, reliefs and structures the law intends — not aggressive avoidance. The aim is simply to pay the right amount of tax and not a penny more, with everything fully compliant in both countries. That is a more durable kind of efficiency than any scheme.
How we handle it
Planning that looks ahead
Review your position
We look at your income, business, investments and plans across both the UK and US.
Identify opportunities
We pinpoint allowances, reliefs and timing decisions available before year-end.
Model both systems
We check that any UK move stands up on the US side too — and vice versa.
Act in good time
We help you implement the steps while they still count, not after the window has closed.
Frequently asked questions
Tax planning is the proactive, legitimate arrangement of your financial affairs to manage your tax position efficiently — making the most of available allowances, reliefs and timing, within the rules. It is forward-looking, unlike compliance work which reports on what has already happened. Done well, it is about paying the right amount of tax and no more, not avoidance.
Filing reports the past; planning shapes the future. A tax return records what already happened and works out the tax due. Planning happens beforehand — deciding how to structure income, investments, a business or major decisions so the eventual tax outcome is as efficient as the rules allow. The biggest savings usually come from decisions made before year-end, not after.
For companies and their owners it can include profit extraction (the salary-versus-dividend mix), timing of investment to use capital allowances, choosing the right business structure, pension contributions, and planning around year-end. For US-owned UK companies it also means coordinating UK decisions with US rules such as GILTI so one does not undo the other.
Because a decision that is efficient in one country can be costly in the other. Investments, pensions, company structures and even how you hold savings can be treated very differently by HMRC and the IRS — UK funds that are PFICs for US purposes are a classic example. Genuine US-UK planning looks at both systems together, so you do not solve one problem by creating another.
No. Legitimate tax planning means using the allowances, reliefs and structures that the law provides, as intended. It is not aggressive avoidance schemes, which carry real risk. Our approach is straightforward: claim what you are entitled to, structure decisions sensibly, and keep everything fully compliant in both countries.
Earlier than most people think. Many of the most effective steps must be taken before the relevant tax year-end, not at the point of filing. Reviewing your position well ahead of deadlines — and before major decisions like selling an asset, taking a dividend or restructuring — is where planning adds the most value.
Plan ahead, instead of paying for hindsight
The best tax decisions are made before year-end, not after. Book a free consultation and we'll review your position across both the UK and US and map the efficient, compliant path forward.