2024 US tax year end planning for Americans in the UK

Spreading income over two tax years

Depending on your tax bracket, the tax rate on long term capital gains and qualified dividends ranges from 0% - 20%. While the tax rates on ordinary income ranges from 0% - 37%. You can deduct losses up to $3,000 with any excess losses carried forward. Should you wish to reinvest in the same stock, it is best to do so either 30 days before or 30 days after the sale to avoid wash sale rules, which would disallow the loss. 

What should you do?

By spreading capital gains/income between tax years, you can abstain from incurring spikes in income, which may push gains/income into the higher tax brackets. This may help minimise the total tax paid for those tax years. You may also want to consider realising some capital losses to reduce tax on other investment income and gains.  

An investment decision should also be made, and there is the possibility of disposing of and reacquiring an asset, so we recommend seeking advice tailored to your unique circumstances. 

Net Investment Income Tax (NIIT) 

You may continue to incur an additional tax of 3.8% on unearned investment income, where your Modified Adjusted Gross Income (MAGI) exceeds the following thresholds:

What should you do?

If you spread investment income across several years or offset it by above-the-line deductions, you can avoid incurring the additional 3.8% NIIT by keeping your total income under the thresholds. You could also consider realising capital losses in years where you have higher investment income. 

For the estate of a US citizen or domicile who makes taxable gifts or passes away in the 2024 calendar year, the lifetime exclusion available against the estate or gift tax is $13,610,000, increasing to $13,990,000 in 2025. 

Although the exclusion amount is scheduled to reduce to pre-2018 levels after 2025, it is possible that the higher allowances will be extended beyond 2025. But as this is not certain, and as the IRS has confirmed that individuals taking advantage of the increased levels for 2018 to 2025 will not be inversely impacted after 2025, 2024 is still a good time to take advantage of gifting opportunities. 

Be aware that substantial gifts to US charities, particularly to US charitable trusts, could be deemed a settlement for UK tax purposes, creating UK tax issues. Under the new UK rules, anyone with 10 years of UK residence would be impacted, so US/UK taxpayers should strongly consider the use of dual qualified charities and donor advised funds.

What should you do?

There is potential for you to make tax-efficient gifts before the 2023 year end. For example, you could make a gift of up to $17,000 ($18,000 In 2024), per donee, per donor, and not use up the current $12,920,000 Estate Tax threshold. 

You may also want to follow through with any tax planning that involves using up the lifetime exemption amount before it reduces in a few years’ time.

Get in touch for advice on obtaining US/UK tax relief on charitable contributions and minimising any UK Inheritance Tax on a settlement into a trust.

If you hold a traditional Individual Retirement Account (IRA) or 401(k) plan, you could still convert it to a Roth IRA. Converting your traditional IRA to a Roth IRA will, for some taxpayers, create long-term tax benefits. This is because, generally speaking, subsequent withdrawals are not taxable and no minimum distribution is required each year after reaching age 73 (unlike for traditional IRAs). Conversions are taxable in the US at ordinary Income Tax rates and will create a tax charge for 2024 that must be met by other sources of cash. However, given the flexibility that a Roth may bring, if you are more suited to a Roth IRA from an investment perspective, you may wish to consider making the conversion now.  

Where contributions into a 401(k) plan or traditional IRA also involve a period of foreign service, available foreign tax credits may be used to reduce the liability. Furthermore, no Net Investment Income Tax (NIIT) is due on any distribution, conversion or rollover to/from a Roth IRA account. 

What should you do?

Consider transferring your traditional IRA/401(k) plan into a Roth IRA before the end of 2024 if you’re more suited to it from an investment perspective.

If you have a non-US (e.g. UK) mortgage and you are about to sell your property and redeem the mortgage, beware of the tax trap. This includes US taxpayers with UK mortgages who have a mortgage contract about to expire (e.g. a two-year fixed rate deal) and are considering transferring to a different mortgage provider. 

The British pound remains weaker against the dollar, which means it costs less in dollar terms to relinquish a mortgage than it did when the pound was stronger. Unfortunately, the IRS taxes such dollar gains as income, which can be surprising, especially when the true value of the property has decreased in dollar terms as a result of the British pound devaluation. While it’s possible to harvest excess foreign tax credits in such a situation, we encourage you to seek advice and plan against any nasty surprises. 

What should you do?

Consider the foreign exchange position before changing mortgage contracts.

For those who are paying UK tax on worldwide income and are on the ‘paid’ basis of accounting for foreign tax credits, it’s important to consider paying your UK tax liability by 31 December 2024, even if the tax on the income is not due until 31 January 2025, or possibly even 31 January 2026. This will ensure that a corresponding foreign tax credit may be taken against any federal tax due on non-US income realised in 2024 and reported on your 2024 US tax return. This is especially true for self-employed individuals and partners with rising profits or if a capital gain has been realised in 2024. 

Experience tells us that making payments before the festive season avoids last-minute problems and ensures you have the available tax credit. 

Conversely, if you have plenty of excess foreign tax credits carried forward from the previous 10 years, you may want to consider utilising these by deferring a UK tax payment while still making sure to remain compliant with the 31 January 2025 UK tax deadline. This is because after 10 years, unused foreign tax credits are wasted. Rolled over foreign tax credits are utilised in a year with a shortfall of foreign tax credits on a first in, first out basis, so intentionally creating a shortfall in 2024 may allow you to utilise credits going back to 2014. 

What should you do?

If you have realised any capital gains in 2024, or your income that is not taxed at source has increased, consider making a prepayment of UK tax before 31 December 2024. 

If you have large carried forward unused credits, consider paying the tax in January 2025 if the unused credits are in the relevant basket. 

Alternatively, if you are an accruals basis taxpayer, realising gains in quarter one of 2025 aligns the US tax with the UK foreign tax credit accrued in the same year. 

When looking to move to a new country, it is important to seek tax advice well ahead of the move to allow for the most efficient tax planning. For green card holders, the beginning of the new 2025 tax year will mean another year is added to the number of years considered under the eight out of 15-year expatriation tax charge regime. 

What should you do?

If you are considering a move overseas, get in touch with our experts first to allow adequate time for planning. If you are approaching the eight-year green card holding period, you may wish to take advice as to whether there would be any advantage in surrendering your green card this 2024 calendar year.