Financial independence is the point where your investments generate enough return to cover your living costs, without needing a salary. It does not necessarily mean stopping work — it means having the choice. The idea is the core of the FIRE movement (Financial Independence, Retire Early). The central number is how much capital you need, and it depends almost entirely on how much you spend per year. Here we go through the maths.
A common rule of thumb says you can withdraw about 4% of a well-diversified portfolio in the first year and then adjust for inflation, and the money has historically lasted at least 30 years. Turned around, that means you need roughly 25 times your annual spending.
If you spend €36,000 a year, the target number is about €900,000. The rule is a simplification — it is based on historical returns, does not account for Irish tax and works less well for very long withdrawal periods — but it gives a useful order of magnitude.
How quickly you reach independence depends less on your income and more on what share of it you save. Saving 15% of take-home pay takes roughly 40 years; saving 40% takes a bit over 20 years; saving 60% around 12-15 years. The reason is twofold: you build capital faster, and you get used to living on less, which lowers the target number.
Cutting fixed costs therefore has a double effect — every €100 less in monthly spending both reduces what you need to save and reduces how large the final pot must be.
Investment gains held personally in Ireland are taxed — broadly 41% exit tax on funds and ETFs, 33% Capital Gains Tax on individual shares. A pension (PRSA or occupational scheme) has tax relief going in and grows tax-free, but you cannot usually access it before your late 50s. Account for this when you set your target: many people planning early independence build a taxable 'bridge' pot for the years before the pension unlocks.
Remember too that the State Pension and any occupational pension start later in life. Planning for a bridge to that point, and lower personal withdrawals once the pensions arrive, keeps the target realistic.
Informational content, not financial, tax or legal advice. Check amounts, limits and current rules directly with the official sources (the Department of Social Protection, the Central Bank of Ireland, Revenue, the Deposit Guarantee Scheme) before making a decision.
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