Investing

Cash savings or investing: how to decide, after Irish tax

Last updated 16 October 2026

Deposit interest pays 33% tax and is protected up to €100,000. Investments can earn more but can fall. How tax and time change the choice.

Money in a bank account is safe in euro terms but grows slowly. Money invested in shares or funds is likely to grow faster over long periods, but its value can fall, sometimes for years. Tax narrows the gap in different ways for each.

Start with when you need the money

Money you may need within a few years, and an emergency fund, belongs in cash. A fall in the markets at the wrong moment could force you to sell at a loss. Money you won't touch for ten years or more can ride out falls, and that is where investing tends to pay.

How each is taxed

Deposits: DIRT (the tax on savings interest) of 33% is taken from each interest payment, so only two-thirds of the interest compounds.
ETFs and funds: exit tax on sale and every 8 years. It is 38% in 2026 and 35% from 2027 (Budget 2027, once Finance (No. 2) Bill 2026 is enacted).
Shares: Capital Gains Tax at 31% when you sell, after the yearly exemption, plus income tax, USC and PRSI on dividends.

Ten years, three ways

Put €5,000 in now and €200 a month for 10 years, €29,000 in all, and cash in at the end. Dividends are taxed at 52.2375% and both investments carry charges of 0.2% a year:

Where	Tax	You keep
Savings account at 2%	DIRT at 33% on each interest payment	€31,360.88
ETF at 6% a year	Exit tax every 8 years and on sale	€36,636.49
Shares at 4% growth plus 2% dividends	Dividend tax each year, Capital Gains Tax on sale	€36,694.16

These are steady returns chosen to show the tax, not forecasts. Real investments move up and down, and over ten years could end below what you put in.

Inflation counts too

Consumer prices rose 4.1% in the twelve months to September 2026, according to the Central Statistics Office. A deposit paying less than inflation after DIRT is losing buying power, even though the balance goes up.

Safety

Deposits with banks, building societies and credit unions authorised in Ireland are protected up to €100,000 per person per institution by the Deposit Guarantee Scheme. There is no equivalent guarantee on what an investment is worth.

Before investing, clear expensive debt and put a few months of essential spending in cash. Paying off a loan that charges 9% saves 9% a year for certain, with no tax on the saving.

To compare the three with your own amounts and rates, use the savings and investment comparison. For how the taxes work in more detail, see how savings and investments are taxed.

Work it out

Sources

Revenue: What DIRT rate is applicable? (33% on deposit interest) (checked 25/10/2026)
Revenue: Deposit interest: DIRT is a final liability, no USC on deposit interest (checked 16/10/2026)
Central Bank of Ireland: Deposit Guarantee Scheme: up to €100,000 per person per institution (checked 16/10/2026)
Central Statistics Office: Consumer Price Index September 2026 (2026 weights and 12-month changes by division) (checked 25/10/2026)
Revenue: Tax and Duty Manual Part 27-04-01: offshore funds in the EU, EEA and OECD (38% rate, 8-year deemed disposal, no loss relief, no USC or PRSI) (checked 25/10/2026)
Revenue: How to calculate CGT (checked 25/10/2026)
Revenue: Dividend income (25% DWT, taxed at your marginal rate with USC and PRSI) (checked 25/10/2026)
Department of Finance: Statement by the Minister for Finance on Budget 2027: fund and life assurance exit tax 38% to 35% from 1 January 2027 (checked 25/10/2026)

General information, not tax advice. HeyPenny is not a tax agent.