Can I retire at 55 with £300k? (UK)

For many people it will be tight, but that does not make the question pointless. At 55 the pot may need to cover a long period before State Pension and potentially a gap before some private pensions are accessible. The plan becomes more realistic when spending is modest, housing costs are low and later secure income is strong. Model those pieces rather than relying on the £300,000 label.

The normal minimum pension age is currently 55 for most people and rises to 57 from 6 April 2028, unless a protected pension age or another exception applies. Your scheme can also have its own rules. If retirement starts before the money is available, the accessible bridge in cash, ISA or other non-pension assets is just as important as the total pot.

A 4% starting withdrawal is £12,000 a year before tax, but at 55 that money may need to last a long time. Try 3%, 3.5% and 4%, then add State Pension and any defined benefit income at the right ages. You are not looking for the percentage that produces the nicest answer. You are checking what level of spending the plan can carry through each stage.

Add the spending gap for each bridge year, subtract any earnings or other income, then add a buffer for tax, repairs and market uncertainty. If you need £24,000 a year and have £8,000 of part-time income, the bridge starts at roughly £16,000 a year before one-off costs. Keep this bridge calculation separate from later retirement income.

Often, yes. Earning £8,000 or £10,000 a year for the first few years can reduce withdrawals when the pot is most exposed and may also give you some routine and social contact. It does not have to mean replacing one full-time job with another. Use an income you could realistically earn, hours you would accept and a date when you would want to stop.

Use your official forecast as income that starts later, then run another version where it begins a year later. Your amount depends on your National Insurance record and not everybody receives the full State Pension. It can reduce investment withdrawals considerably once it starts, but it cannot pay for the years before then.

Put the real payment into spending and model the balance separately. Paying it off may lower monthly costs but can also use the accessible money needed for the bridge. Compare both routes: keeping the mortgage with a larger investment reserve, and clearing it with lower spending but less liquidity. The cheapest interest calculation is not always the safest retirement plan.

Add them explicitly. A replacement car, roof, family support and a few worthwhile trips can turn a neat £20,000 budget into a very different five-year period. Smooth averages hide timing. At 55, a £20,000 cost in year two matters more than the same cost after State Pension starts, so place it in the year you expect it.

The main risk is the combination of a long retirement, a relatively small starting pot and poor returns early on. Inflation and an unrealistically low spending figure can do just as much damage. Run a version with a poor start, a longer life and higher spending together. If the plan only works when every assumption goes your way, it needs another option.

Try a two or three-day working week, a defined career break, spending from accessible assets until pension access, retiring a few years later or reducing one large fixed cost. The calculator is useful because it can show the smallest change that closes the gap. That may be far less dramatic than another decade of full-time work.