Remittance Basis Charge Calculator
Estimate the historical UK remittance basis charge, compare it with a simplified arising basis tax cost, and visualize whether claiming the remittance basis may have been worthwhile. This calculator is for educational planning only and should be checked against current HMRC rules and professional advice.
The calculator uses simplified historical charge bands: £30,000, £50,000, or £60,000 depending on the period and residence history. From 2025-26 onward, the old remittance basis charge is generally treated here as unavailable.
Expert guide to using a remittance basis charge calculator
The remittance basis charge calculator is designed to help internationally mobile taxpayers, advisers, and finance teams estimate a very specific UK tax cost: the fixed annual charge that historically applied when certain non-UK domiciled individuals claimed the remittance basis after being UK resident for a sufficient number of years. In practical terms, the remittance basis allowed qualifying individuals to keep foreign income and foreign gains outside the immediate UK tax net if those funds were not remitted to the UK. That treatment could be valuable, but for longer-term residents it came at a price.
This page gives you both a working calculator and a detailed explanation of the underlying concepts. It is especially useful if you are trying to understand whether paying a remittance basis charge would historically have been cheaper than paying UK tax on worldwide income and gains on the arising basis. Because the UK rules have changed significantly over time, any estimate should be treated as a planning tool rather than a substitute for bespoke advice.
Important context: the UK tax treatment of non-domiciled individuals has evolved materially, and from 2025-26 onward the old remittance basis framework is no longer the baseline regime this calculator was built around. That means historical modeling and current-year compliance are not always the same exercise.
What is the remittance basis charge?
The remittance basis charge, often shortened to RBC, was a fixed annual amount payable by certain long-term UK resident individuals who wished to continue using the remittance basis. Under the remittance basis, foreign income and gains were generally taxed in the UK only if remitted to the UK, rather than as they arose. For someone with substantial offshore investment income or unrealized foreign capital gains, this could create a meaningful deferral or even a permanent tax advantage if funds remained offshore.
However, once residence duration thresholds were crossed, access to that treatment was no longer free. Depending on the tax year and the individual’s residence history, the charge could be £30,000, £50,000, or £60,000. In later years, individuals who were deemed domiciled under the 15 out of 20 year rule were generally no longer able to rely on the remittance basis in the same way. That is why this calculator asks for residence totals across multiple look-back periods rather than only one number.
Core idea behind the calculation
A basic remittance basis charge calculator answers three questions:
- Was the person within a tax regime where the charge still applied?
- Had the person been UK resident long enough to trigger the £30,000, £50,000, or £60,000 charge?
- Would paying that charge have been cheaper than being taxed on the foreign income and gains under the arising basis?
The calculator on this page also compares the fixed charge with a simplified estimate of arising basis tax. That comparison is important because the remittance basis charge was never the full economic story. Claiming the remittance basis could also involve losing the personal allowance and the annual exempt amount for capital gains tax, among other knock-on effects. Accordingly, the right answer was not always simply “if the charge is low, claim it.”
Official residence thresholds and charge levels
The table below summarizes the key historical thresholds used by this calculator. These are the headline statutory figures commonly discussed in tax planning and HMRC guidance.
| Period used in this calculator | Residence history trigger | Indicative charge | Practical meaning |
|---|---|---|---|
| 2012-13 to 2014-15 | Resident in at least 7 of previous 9 tax years | £30,000 | Entry-level remittance basis charge for longer-term residents. |
| 2012-13 to 2014-15 | Resident in at least 12 of previous 14 tax years | £50,000 | Higher charge introduced for more established UK residents. |
| 2015-16 to 2024-25 | Resident in at least 7 of previous 9 tax years | £30,000 | Base annual charge remained in place. |
| 2015-16 to 2024-25 | Resident in at least 12 of previous 14 tax years | £60,000 | Higher charge increased from the prior £50,000 level. |
| 2017-18 to 2024-25 | Resident in at least 15 of previous 20 tax years | Typically unavailable | Deemed domicile rules generally removed access to the old remittance basis structure. |
| 2025-26 onward | Current reform era | Old RBC not applied here | The calculator treats the historic charge regime as no longer available. |
Why a calculator is useful
The value of a remittance basis charge calculator is that the fixed charge can look deceptively simple while the planning decision is not. Suppose an individual has £100,000 of foreign income and gains that would otherwise be taxed at an effective 40% on the arising basis. A £30,000 remittance basis charge might look attractive because it is less than the £40,000 estimated tax cost. But if the claim also causes the loss of allowances, or if the person expects to remit the funds to the UK soon anyway, the benefit can narrow sharply.
Equally, someone with a relatively modest amount of unremitted foreign income might find the charge disproportionately expensive. If the estimated arising basis tax is only £12,000, paying a £30,000 charge would normally be unattractive unless there were other strategic reasons, such as preserving offshore clean capital structures or managing future remittances in a more flexible way.
Inputs that matter most
- Tax year or regime: this determines which historical charge bands are relevant.
- Residence history: the 7 out of 9, 12 out of 14, and 15 out of 20 tests drive eligibility and charge level.
- Foreign income and gains kept offshore: this approximates the base amount that would otherwise be taxed on the arising basis.
- Effective tax rate: a blended rate is useful where income includes interest, dividends, and gains.
- Allowance impact: losing the personal allowance or annual exempt amount can change the economics.
Comparison table: representative UK tax rates often used in planning models
One reason calculators like this ask for an effective tax rate is that foreign income and gains are not all taxed the same way under UK rules. The table below shows selected headline rates that are commonly used for rough planning comparisons. These are real statutory rates, but your actual rate can differ depending on income type, tax year, and whether gains qualify for any special treatment.
| Item | Representative UK rate | Planning relevance |
|---|---|---|
| Additional rate income tax on non-savings / savings income | 45% | Useful proxy for high earners with foreign interest or other taxable income. |
| Higher rate dividend tax | 33.75% | Relevant where offshore returns are mainly foreign dividends. |
| Additional rate dividend tax | 39.35% | Often a more realistic estimate for top-rate investors. |
| Higher rate capital gains tax on most assets | 20% | Common starting point for modeling foreign investment gains. |
| Capital gains tax on residential property gains | 24% | Potentially relevant where foreign real estate is involved. |
| Basic remittance basis charge | £30,000 | Can be economical only when the tax otherwise avoided is higher. |
How to interpret the calculator’s result
After you click calculate, the tool shows the estimated remittance basis charge, the estimated arising basis tax, and the difference between them. A positive “estimated saving from claiming” means the fixed charge is lower than the simplified tax that would otherwise be due on foreign income and gains. A negative number means the claim appears economically unattractive on the assumptions used.
You will also see an explanatory message if the old remittance basis framework is treated as unavailable. That can happen in this calculator if you choose 2025-26 onward, if you say you were not eligible under the old non-domicile framework, or if you fall into the deemed domicile category for the 2017-18 to 2024-25 period by being resident in at least 15 of the previous 20 tax years.
What this calculator does not do
- It does not prepare a tax return.
- It does not model mixed funds or detailed remittance tracing.
- It does not compute foreign tax credit relief.
- It does not replace domicile advice or residence analysis under the Statutory Residence Test.
- It does not determine whether transitional provisions, temporary repatriation facilities, or reform-era rules apply.
Common scenarios where this analysis is valuable
1. Long-term UK resident with offshore portfolio income
If an individual has substantial foreign dividends and interest but does not need the money in the UK, the remittance basis may historically have produced a clear tax deferral. The calculator helps quantify whether that deferral was worth the fixed charge. For example, if the offshore amount is large and the effective UK tax rate is near 39.35% or 45%, the fixed charge may compare favorably.
2. Entrepreneur with foreign capital gains
Where foreign gains are large but unrealized or not remitted, the remittance basis could have been attractive before changes in the deemed domicile rules. Here the calculator’s effective tax rate input is useful because gains often attract a lower rate than income. A £60,000 charge may still be worthwhile if the gains taxed on the arising basis would otherwise create a six-figure UK tax bill.
3. Family office annual planning review
International families often review residence days, offshore distributions, and likely remittances annually. A calculator offers a quick first-pass estimate before a technical review of mixed funds, trust structures, or treaty positions. It helps identify years where the remittance basis was clearly efficient and years where it was not.
Best practices when using a remittance basis charge calculator
- Use accurate residence counts. The result depends heavily on whether you cross the 7 out of 9, 12 out of 14, or 15 out of 20 thresholds.
- Model more than one effective tax rate. If your foreign receipts include both dividends and gains, test multiple blended assumptions.
- Consider future remittances. If money will come into the UK soon, a historical deferral may not produce a lasting saving.
- Review allowance losses. The charge is not the only cost attached to a claim.
- Check current law separately. A historical calculator is not a definitive guide to post-reform tax years.
Authoritative sources for deeper research
If you want to validate assumptions or read the technical framework in more detail, start with official HMRC and UK government materials:
- GOV.UK: Tax on foreign income for non-domiciled residents
- HMRC RDR1: Residence, domicile and the remittance basis
- HMRC internal manual: Residence, Domicile and Remittance Basis
Final takeaway
A remittance basis charge calculator is most useful when it is treated as a decision-support tool, not a definitive compliance engine. The historical charge structure can be summarized fairly neatly, but the real-world outcome depends on eligibility, tax year, residence history, the amount and type of foreign income and gains, and whether those funds are likely to be remitted. Use the calculator to frame the question, then verify the answer with current HMRC materials and tailored advice.
In short, the fixed charge only made sense when it purchased something valuable. If the UK tax avoided on unremitted foreign income and gains was materially higher than the charge, a claim could be compelling. If not, the arising basis was often the cleaner and cheaper route. That is exactly the comparison this calculator is built to make.