Selling an investment you’ve held for years feels different from flipping a stock. That difference isn’t just emotional—it’s baked into the tax code, with long-term capital gains taxed at lower rates in the US and a flat 33% rate in Ireland.
US maximum long-term capital gains tax rate: 20% · Ireland standard capital gains tax rate: 33% · US 0% bracket income limit (single, 2025): $47,025 · Ireland annual CGT exemption: €1,270 per person · Holding period for long-term classification: More than 1 year
Quick snapshot
- Ireland capital gains tax standard rate: 33% (Irish Revenue Commissioners)
- US long-term capital gains rates: 0%, 15%, or 20% based on income (American Expat CPA)
- Ireland annual CGT exemption: €1,270 per person (Irish Revenue Commissioners)
- Future changes to tax brackets or exemptions in both countries (ExpatTaxes Ireland)
- State-level capital gains taxes in the US and their interaction with Irish CGT (ExpatTaxes Ireland)
- How the remittance basis interacts with US foreign tax credits for non-domiciled individuals (ExpatTaxes Ireland)
- US–Ireland Tax Convention (Article 13 on capital gains) signed September 24, 1998 (Internal Revenue Service)
- Investors should monitor both Irish and US tax threshold updates for 2025 and beyond (Davy)
- Cross-border investors may need dual compliance, including FBAR filings when foreign accounts exceed $10,000 (Greenback Expat Tax Services)
The table below summarizes the key metrics for both countries:
| Label | Value |
|---|---|
| US long-term capital gains rate (highest) | 20% |
| Ireland standard CGT rate | 33% |
| Holding period for long-term classification | More than 1 year |
| US 0% bracket income limit (single, 2025) | $47,025 |
| Ireland annual CGT exemption | €1,270 per person |
| Ireland 7-year rule exemption | Gains on gifts if donor survives 7 years |
What is capital gains tax?
Capital gains tax (CGT) is a levy on the profit you make when you sell or dispose of an asset that has increased in value. The key distinction is how long you held the asset before selling.
Definition of capital gains
- A capital gain equals the sale proceeds minus the cost basis (purchase price plus allowable expenses). (Irish Revenue Commissioners)
- In the US, assets held for more than one year qualify for preferential long-term rates; assets held one year or less are taxed as ordinary income. (American Expat CPA)
- Ireland makes no distinction between short-term and long-term gains — all disposals are taxed at the same flat rate. (Coalition of Irish Immigration Centers)
The implication: a US investor selling after 13 months gets a rate break; an Irish investor gets none, no matter how long they waited.
Long-term vs short-term classification
The holding period is the sole trigger. In the US, the Internal Revenue Service taxes short-term gains at your ordinary income tax bracket (which can reach 37%), while long-term gains get the 0%/15%/20% schedule. Ireland applies its 33% rate uniformly. (CountryTaxCalc)
The trade-off: Irish investors lose the benefit of holding longer, but the flat 33% may still be lower than the top US ordinary rate on short-term gains.
How much long-term capital gain is tax-free?
For US filers, the answer depends entirely on taxable income — low earners can pay nothing. In Ireland, a small annual exemption applies, but beyond that the full rate kicks in.
0% tax bracket income limits (single, married filing jointly)
- Single filers with taxable income up to $47,025 in 2025 pay 0% on long-term capital gains. (American Expat CPA)
- Married couples filing jointly can earn up to $94,050 and still pay 0%. (American Expat CPA)
15% and 20% brackets for higher incomes
- Income above those thresholds faces 15% (most taxpayers) or 20% (top earners).
- An additional 3.8% Net Investment Income Tax applies to high earners (AGI over $200k single, $250k married).
Net Investment Income Tax (3.8%) for high earners
The 3.8% surtax can push the effective US long-term rate as high as 23.8%. Ireland has no equivalent surtax. (Greenback Expat Tax Services)
Why this matters: a US investor with moderate income effectively gets a tax-free allowance of up to $47,025 in gains — a powerful planning lever that Ireland does not offer.
What is the long-term capital gains tax in Ireland?
Ireland’s system is simpler — and more expensive for most — than the US tiered approach.
Standard rate of 33%
- The standard capital gains tax rate in Ireland is 33% for individuals. (Irish Revenue Commissioners)
- This rate applies to all chargeable assets: property, shares, crypto, business interests. (Coll & Co Accountants)
40% rate for foreign life policies and certain gains
- Gains from foreign life policies and foreign investment products are taxed at 40%. (Irish Revenue Commissioners)
7-year capital gains tax exemption
- Gifts or transfers may be exempt from CGT if the donor survives seven years after the transfer. (Coll & Co Accountants)
The 60% trap
The side-by-side comparison highlights the structural differences:
| Feature | United States | Ireland |
|---|---|---|
| Long-term rate structure | 0%, 15%, 20% (plus 3.8% NIIT) | Flat 33% |
| Holding period for long-term | >1 year | No distinction |
| Annual exemption | None (except via losses) | €1,270 per person |
| Special rates | Collectibles 28% | 40% for foreign life policies |
| Tax-free at low income | 0% bracket up to $47,025 (single) | Only first €1,270 |
The pattern: the US rewards holding and low income; Ireland offers a thin exemption but no preferential long-term treatment.
How do I calculate my capital gains tax?
The math is similar in both countries — find your gain, subtract allowable costs, apply the rate.
Calculate capital gain: selling price minus cost basis
- Determine the gross capital gain: sale proceeds minus cost basis (purchase price plus improvements). (Irish Revenue Commissioners)
- Adjust the cost basis for allowable deductions, including legal fees, broker commissions, and enhancement costs. (Coll & Co Accountants)
- Apply the annual exemption (€1,270 in Ireland) to the net chargeable gains. (Irish Revenue Commissioners)
- Apply the correct tax rate based on jurisdiction and income: 0%/15%/20% in the US plus 3.8% NIIT if applicable, or 33% in Ireland (40% for certain policies). (Greenback Expat Tax Services)
- Use official calculators (IRS, Revenue) for precise figures.
What this means: the calculation is straightforward in both places, but the final bill differs dramatically because of the rate divergence.
How to avoid tax on long-term capital gains
Legal strategies exist in both countries to reduce or defer the tax bite. Here are the most effective steps.
Hold assets for more than one year
- In the US, this qualification alone unlocks the preferential long-term rates. (American Expat CPA)
- In Ireland, holding period does not affect the rate, but deferring a sale may delay the tax liability.
Use tax-advantaged accounts (IRA, 401(k))
- US retirement accounts allow tax-deferred or tax-free growth; capital gains inside these accounts are not separately taxed. (Davy)
Utilise annual exemptions (Ireland €1,270)
- Irish residents can shelter the first €1,270 of net gains each year. (Irish Revenue Commissioners)
Consider charitable donations and gift allowances
- Donating appreciated assets directly to a charity can avoid capital gains tax in the US.
- In Ireland, the 7-year rule allows certain gifts to escape CGT if the donor survives seven years. (Coll & Co Accountants)
Plan around the 7-year rule in Ireland
- If you plan to transfer assets to children, timing the gift to fall within the 7-year window can eliminate Irish CGT. (ExpatTaxes Ireland)
The trade-off: US strategies center on holding periods and retirement accounts; Irish strategies rely on exemptions and the 7-year gift rule. Cross-border investors need to coordinate both. See also: IRS Tax Brackets 2025: Rates, Deductions & Capital Gains.
Clarity section
Confirmed facts
- Irish CGT standard rate is 33% (Irish Revenue Commissioners)
- US long-term rates are 0%, 15%, 20% based on income (American Expat CPA)
- Holding period >1 year is required for long-term classification (CountryTaxCalc)
Rumored / less clear
- Future changes to tax brackets or exemptions (HCO)
- State-level capital gains taxes in the US
- Interaction of remittance basis with US foreign tax credits (ExpatTaxes Ireland)
“The rate of CGT is 33% for most gains.”
— Irish Revenue Commissioners (Ireland’s tax authority)
“Long-term capital gains are taxed at preferential rates of 0%, 15%, or 20% depending on taxable income.”
— American Expat CPA (US expat tax specialist)
For a US citizen living in Ireland, the choice is clear: plan disposals carefully, use foreign tax credits, and consider the remittance basis where applicable, or risk paying the full Irish 33% without offset.
Related reading: IRS Tax Brackets 2025: Rates, Deductions & Capital Gains
For a closer look at Ireland’s 33% capital gains tax, Irish capital gains tax rates provides a thorough overview of exemptions and calculations.
Frequently asked questions
What is the difference between short-term and long-term capital gains?
In the US, short-term gains (held ≤1 year) are taxed at ordinary income rates; long-term gains get 0%, 15%, or 20%. Ireland does not distinguish between the two — all gains face the flat 33% rate. (CIIC)
Are capital gains taxed differently for property?
In both countries, property gains are generally treated the same as other assets. However, primary residence exemptions exist under each system. In the US, up to $250,000 ($500,000 for married) of gain on a principal residence may be excluded. In Ireland, a similar relief applies to the sale of a main home, subject to conditions.
Do I pay capital gains tax if I inherit property?
Inherited assets typically receive a step-up in basis in the US, meaning no capital gains tax on the pre-death appreciation. In Ireland, inheritance is subject to Capital Acquisitions Tax, not CGT, though later disposals by the heir may attract CGT.
Can I offset capital gains with losses?
Yes, both countries allow capital losses to offset gains. In the US, net losses can deduct up to $3,000 per year against ordinary income. In Ireland, losses can be carried forward but not offset against income. (Irish Revenue Commissioners)
What happens if I don’t report capital gains?
Failure to report can lead to penalties, interest, and potential criminal charges. The IRS and Irish Revenue both have robust compliance programs. In Ireland, taxpayers must file a CGT return even if no tax is due. (Irish Revenue Commissioners)
Is there a capital gains tax allowance in the United States?
No explicit annual allowance like Ireland’s €1,270. However, the 0% bracket effectively provides a tax-free zone for investors with low taxable income.
How does the 60% trap affect Irish investors?
The 60% trap can push the effective tax rate on certain life assurance policy gains close to 60% because part of the gain is treated as income. Investors should review policy structures carefully. (Irish Revenue Commissioners)
What is the 7-year rule for capital gains in Ireland?
Gifts or transfers of assets may be exempt from CGT if the donor lives for at least seven years after the transfer. If the donor dies within seven years, the gain may become taxable. (Coll & Co Accountants)