Introduction: Expat Tax Kentucky Planning for British Families in Louisville and Lexington
The expat tax Kentucky position improved on 1 January 2026, when the state's flat income tax rate fell from 4% to 3.5%. Kentucky now charges less than most of its neighbours. However, two features catch British families out. First, the state gives no credit for tax paid to HMRC, because its statute limits the credit to US jurisdictions. Second, Louisville and Lexington levy local occupational taxes on salary, although those taxes leave investment income and pensions alone. Consequently, UK rent and dividends bear exactly 3.5%, while a Louisville salary bears 5.7%.
At TaxYork, we prepare federal, Kentucky, local and UK returns for British executives, engineers, physicians, bloodstock investors and company owners across Louisville, Prospect, Lexington and northern Kentucky. In our experience, newcomers confuse the local wage tax with the state tax and misjudge both. Therefore this expat tax Kentucky guide separates the layers and shows where your UK income falls in each.
Expat Tax Kentucky Basics: Three Layers, but Only Two Reach UK Income
A British family in Kentucky faces three income tax layers. Federal tax reaches worldwide income, relieved by the foreign tax credit on IRS Form 1116. The state then taxes residents at a flat rate on almost the same income. Finally, the city or county where you work taxes wages and business profits. Notably, that third layer never touches UK rent, dividends, gains or pensions. Meanwhile, HMRC keeps taxing UK rent and UK property gains throughout.
Who This Guide Is Written For
This guide addresses high-net-worth British nationals, dual national US UK families and accidental Americans living in Kentucky, plus Kentucky-domiciled Americans working in London. Specifically, it suits senior people in logistics, healthcare, automotive manufacturing, distilling and the thoroughbred industry, together with investors and business owners holding UK property, pensions, ISAs or company shares. If that describes your household, the expat tax Kentucky rules below decide how much of your UK income each layer reaches.
How Kentucky Compares With Our Other State Guides
Kentucky sits between its neighbours. Across the river, Indiana credits UK tax against its 2.95% state charge but adds county tax on everything. To the north, Ohio charges 2.75% and lets cities and school districts add more. In contrast, Kentucky gives no foreign credit, yet its local taxes ignore investment income entirely. As a result, Kentucky suits a household with a modest salary and large UK investment income better than Indiana does.
How Kentucky Taxes High Earners in 2026
Kentucky taxes high earners at one rate on a base that starts from federal adjusted gross income. For expat tax Kentucky purposes, the rate cut is the headline, while the thin deductions explain why the bill stays meaningful. Therefore both deserve a close look.
The Expat Tax Kentucky Flat Rate
The Kentucky rate is 3.5% for 2026. The Department of Revenue's 2025 Form 740 instructions confirm a 4% rate for 2025, and legislation signed in February 2025 cut it by half a point from 1 January 2026. Further cuts depend on revenue triggers set in statute. Consequently, a couple with $500,000 of taxable income saves about $2,500 a year compared with 2025.
A Small Standard Deduction
The expat tax Kentucky base allows very little before the rate applies. The standard deduction for 2025 is $3,270, and on a joint return a couple receives only one. Alternatively, you may itemise, but Kentucky's own schedule is narrower than the federal one. Hence almost all of a senior executive's adjusted gross income becomes Kentucky taxable income.
No Special Rate for Capital Gains or Dividends
Kentucky taxes capital gains and dividends as ordinary income. A long-term gain taxed at 20% federally therefore bears the full 3.5% to the state. Furthermore, the gain enters in dollars through the federal return, so currency movements can create a Kentucky gain where the sterling figures show none. Unlike Wisconsin or South Carolina, Kentucky offers no percentage exclusion.
The Pension Exclusion
Kentucky excludes up to $31,110 of pension income for each taxpayer. The Form 740 instructions describe the exclusion as covering other pension and annuity income included in federal adjusted gross income, and US Social Security benefits are exempt altogether. On a joint return each spouse computes a separate exclusion. Therefore a couple who each draw a pension can shelter $62,220 a year, which we return to below for UK schemes.
No Credit for UK Tax
Kentucky gives no credit for tax paid to a foreign country. This is the central expat tax Kentucky fact. The federal return hides it, because the federal credit can remove the federal bill while the state bill stays whole.
The Statute Defines "State" Narrowly
Kentucky's credit applies to income tax paid to another state. The Form 740 instructions quote the statute directly: a state means a state of the United States, the District of Columbia, Puerto Rico or any US territory or possession. The United Kingdom is none of these. As a result, UK income tax on your London flat and UK capital gains tax on its sale never reduce the Kentucky liability.
Why the Treaty and the Federal Credit Do Not Help
The federal foreign tax credit reduces federal tax, not federal income. Kentucky starts from adjusted gross income, which still contains every pound of UK rent and gain. Likewise, the US-UK income tax treaty binds the federal government and does not restrain a state. Consequently, Kentucky charges 3.5% on income that HMRC has already taxed at up to 45%.
The Foreign Earned Income Exclusion Flows Through
Kentucky does follow the federal exclusion. Because the state starts from federal adjusted gross income, salary excluded on IRS Form 2555, up to $132,900 for 2026, never enters the base. In practice, this helps Kentucky natives working abroad and rarely helps Britons living in Louisville, whose tax home is here.
Local Occupational Taxes in Louisville and Lexington
Kentucky's local taxes fall on work, not on wealth. Cities, counties and school boards levy occupational licence taxes on wages and on the net profits of businesses. For expat tax Kentucky purposes, the key point is what they leave out.
Louisville Metro Rates
Louisville Metro charges residents 2.2% of wages. That figure combines 1.25% for the metro government, 0.2% for the transit authority and 0.75% for the school boards. Non-residents who work in Louisville pay 1.45%, because the school board portion applies only to Jefferson County residents. The Louisville Metro Revenue Commission publishes its occupational tax regulations in full.
Lexington Rates
Lexington-Fayette charges an occupational licence fee of 2.25% on compensation and business net profits, at the same rate for residents and non-residents. In addition, the Fayette County school board levies its own 0.5% occupational tax on residents. Therefore a Lexington resident working in the city pays 2.75% on salary. A proposed increase in the school rate was paused in 2026, so check the current rate before budgeting.
What the Local Taxes Do Not Reach
For expat tax Kentucky purposes, the local base is compensation and business profit. It does not include dividends, interest, capital gains, rental income from passive letting or pensions. Consequently, your UK investment income bears no local tax at all. In contrast, an Indiana county taxes all of it, and a Michigan city taxes most of it. This is the point most online guides leave unclear.
Where You Work Matters More Than Where You Live
Occupational taxes generally follow the workplace. The tax is collected through the payroll of an employer operating in the jurisdiction, on work performed there. Accordingly, an Oldham County resident working downtown pays 1.45%, while a Jefferson County resident in the same office pays 2.2%. Additionally, days worked from a home outside the taxing jurisdiction can be excluded with records. Hence hybrid working arrangements deserve a review each year.
UK Pensions, Rent, Gains and ISAs in Kentucky
The expat tax Kentucky treatment of UK income is simple once the layers are clear. Everything bears the 3.5% state rate without credit, nothing bears local tax, and pensions may qualify for the exclusion.
UK Pensions and the $31,110 Exclusion
A UK pension stands a fair chance of qualifying for the exclusion. The instructions refer broadly to pension and annuity income included in federal adjusted gross income, without limiting the relief to US qualified plans. Accordingly, we treat drawdown from a UK workplace scheme or SIPP as eligible and keep the scheme documents on file. However, the Department has issued no specific guidance on foreign schemes, so the position carries some uncertainty.
The UK State Pension
Kentucky exempts US Social Security, but the UK State Pension is not US Social Security. Under the treaty it is taxable only in America for a US resident, and the whole amount enters adjusted gross income. As a result, it reaches Kentucky unless the pension exclusion absorbs it. Meanwhile, HMRC explains how UK income is taxed when you live abroad, which helps when arranging gross payment.
UK Rental Income
On expat tax Kentucky returns, UK rent is taxed three times before relief. HMRC taxes the profit first, usually through the non-resident landlord scheme at 20% unless you apply to receive rent gross. The federal return then taxes the dollar profit, with depreciation over 30 years, and credits the UK tax. Subsequently, Kentucky adds 3.5% with no credit. Notably, passive rent stays outside the local occupational taxes.
Selling UK Property or Shares
Under the expat tax Kentucky rules, gains bear the flat rate in full. A non-resident pays UK capital gains tax on UK residential property and must report within 60 days. Federally, the credit usually covers the 20% rate, although the 3.8% net investment income tax accepts no foreign credit. Kentucky then charges 3.5% on the dollar gain. Therefore selling before you become a Kentucky resident keeps the gain outside the state.
ISAs and UK Funds
An ISA has no status in America or in Kentucky. Its interest, dividends and gains are taxable federally each year and by the state at 3.5%. Furthermore, UK funds inside it are usually passive foreign investment companies reported on IRS Form 8621. Consequently, in expat tax Kentucky terms, the wrapper that is tax-free in Britain offers no shelter at all.
Kentucky Residency and Domicile
For expat tax Kentucky purposes, residency turns on domicile or on a home plus days. A resident pays on worldwide income, while a non-resident pays only on Kentucky-source income. Therefore the residency date can matter more than any deduction.
Two Routes to Residency
Kentucky treats you as a resident if you are domiciled in the state. Domicile means the permanent home you intend to return to. In addition, the Form 740 instructions state that persons who live in Kentucky for more than 183 days during the tax year are considered residents. Hence a British executive with a leased Prospect house and children in local schools is a resident in practice, whatever the visa says.
Part-Year Residents and the Arrival Date
In the year you move, Kentucky taxes income received while you were resident, plus Kentucky-source income from the rest of the year. Part-year residents file Form 740-NP on that basis. Accordingly, a UK share sale completing before arrival falls outside Kentucky altogether. In our experience, this is the cheapest expat tax Kentucky planning point most families miss.
Kentuckians Working in London
A Kentucky native on a London assignment often remains domiciled in Kentucky. If so, the state taxes salary above the federal exclusion and all investment income, with no credit for UK tax. However, local occupational taxes stop, because the work is no longer performed in Louisville or Lexington. Therefore the state return continues while the local one ends, and many Kentuckians abroad file neither.
Case Study: The Calloways in Louisville
The following illustrative case study shows how the expat tax Kentucky layers combine for one household in 2026. The figures are simplified, converted to dollars and rounded.
The Facts
Rupert and Leila Calloway are British citizens holding green cards, with two children. Rupert is a senior logistics executive earning $380,000 at an office in downtown Louisville. They rent out their former home in Bath, producing a $40,000 profit on which HMRC charges about $4,600. Their UK shares and ISAs pay $25,000 in dividends, and in 2026 they sell UK shares at a $60,000 gain. Their adjusted gross income is therefore $505,000, of which $125,000 is UK income.
The State Bill
Kentucky allows one standard deduction, which we take as $3,270. Taxable income is therefore $501,730, and tax at 3.5% comes to $17,561. Of that, $4,375 relates to the UK income. No credit applies for the $4,600 of UK tax on the rent. At the 2025 rate of 4%, the same income would have cost $20,069, so the rate cut saves the family about $2,500.
The Local Bill
Louisville Metro charges 2.2% on Rupert's $380,000 salary, or $8,360. It charges nothing on the rent, the dividends or the gain. Had the family lived in Oldham County instead, the rate on his Louisville salary would be 1.45%, or $5,510. Consequently, the address costs them $2,850 a year, entirely through the school board element.
The Lesson
The total Kentucky bill is $25,921, of which only $4,375 relates to UK income. Selling the shares before arrival would have saved $2,100. The expat tax Kentucky lesson is direct: the state takes a flat 3.5% of UK income with no credit, the city takes nothing from it, and the arrival date is the only lever left.
Compliance That Comes With Kentucky Residency
Full expat tax Kentucky compliance covers the state return, any local return for business profits and federal reporting that draws on the same UK figures. Therefore we prepare them from a single reconciled set of numbers.
Deadlines and Extensions
The Kentucky return is due on 15 April. The Form 740 instructions allow an extension where you request one by the due date, and a copy of the federal extension is accepted. However, an extension to file is not an extension to pay, so interest runs on any balance from April. Additionally, households with untaxed UK rent or dividends usually need quarterly estimated payments.
FBAR and Form 8938
Federal reporting follows you to Kentucky. You must file an FBAR when your non-US accounts exceed $10,000 in aggregate at any point in the year, as FinCEN explains. Moreover, US residents file IRS Form 8938 once foreign financial assets pass $50,000 at year end for a single filer or $100,000 for a joint return. UK current accounts, ISAs, SIPPs and workplace pensions all count. Our FBAR and FATCA reporting service covers both forms.
Missed Returns
Missed expat tax Kentucky returns are common among new arrivals and among Kentuckians abroad. A missed FBAR and missed US tax returns often sit alongside state returns that left out UK income. Fortunately, most cases are fixable when you come forward first. We correct the federal years through our catch-up filing service for missed US tax returns and amend the matching Kentucky years together.
How TaxYork Can Help
TaxYork prepares every return a British family in Kentucky needs, from one set of figures. We provide comprehensive tax preparation and compliance, not opinions without filings. For expat tax Kentucky work, that means the federal, state, local and UK returns agree with each other.
Joined-Up Returns
Our expat tax Kentucky engagement covers the federal return, the Kentucky return and the UK Self Assessment together. Specifically, we convert UK income once, apply the treaty through our treaty and foreign tax credit service, and carry the same figures into the state return. Furthermore, we test the pension exclusion against your UK scheme and keep the evidence on file.
Before the Move, the Purchase or the Sale
The largest expat tax Kentucky savings arise before a transaction. We model the residency start date, compare a Louisville address with its neighbouring counties, and time UK disposals through our cross-border planning and preparation service. Likewise, for Kentucky natives heading to London, we test whether domicile continues and what the state will still charge.
Conclusion
The expat tax Kentucky rules are simpler than they first appear. The state charges a flat 3.5% from 2026 on UK rent, dividends and gains and credits no UK tax. However, the local occupational taxes fall only on salary and business profits, so UK investment income escapes them. Moreover, the pension exclusion can shelter up to $62,220 for a couple. Ultimately, the arrival date and the choice of workplace decide the bill. Make both decisions with the numbers in front of you.
Contact Us
If you are a British national in Kentucky, or a Kentucky-domiciled American working in Britain, we would be glad to prepare your expat tax Kentucky returns. Please contact us to book a consultation with a US-UK specialist. Alternatively, email hello@taxyork.com or call 020 3488 8606. We will review your state, local, federal and UK position together and tell you exactly what must be filed.
Disclaimer
This article provides general information only and does not constitute tax, legal or financial advice. Tax rules in Kentucky, its local jurisdictions, the United States and the United Kingdom change frequently, and their application depends on your individual circumstances. The case study is illustrative and uses simplified figures. You should obtain professional guidance tailored to your situation before acting. TaxYork accepts no liability for any loss arising from reliance on this article.