Take cash, ISA or pension first in retirement?

When people think about retirement, they usually ask: “Do I have enough money?”

That matters. But there is another important question: “Which pot should I take money from first?”

If you get that wrong, you may pay more tax than necessary and make your later retirement more difficult. If you get it right, your money may last longer and feel easier to manage. In the UK, pensions and ISAs are taxed differently. You can usually take money from a private pension from age 55, rising to 57 from 6 April 2028. You can usually take up to 25% of a pension tax-free, while money taken from an ISA is usually tax-free too. The ISA limit is still £20,000 a year.

The simple answer

For many people, the best starting point is:

1. Keep a sensible amount in cash

2. Take some income from your pension, but not too much

3. Use your ISA to top up the rest

4. Review it every tax year

So the answer is usually not just “cash first” or “ISA first” or “pension first”. It is usually:

cash first for short-term needs, then pension up to a sensible tax level, then ISA for the rest.

The best mix depends on your age, income, tax position, when your State Pension starts, and whether you are still paying into pensions.

Why this matters

A pension is usually a very good place to save while you are working. An ISA is often a very good place to take money from in retirement.

That is because pension payments often get tax relief, but most pension income is taxed. ISA withdrawals are usually not taxed.

So if you take too much from your pension too soon, you may create an avoidable tax bill. But if you ignore your pension for too long and live only from cash and ISAs, you may waste lower tax bands and make later withdrawals less efficient.

That is why retirement planning is not just about how much you spend. It is also about where you take it from and when.

Start with cash, but not forever

Cash is useful in retirement. It helps with emergencies, planned short-term spending, and times when markets have fallen. But cash is not a full plan. For most people, cash works best as:

• emergency money

• short-term spending money

• a bridge for known costs coming soon

Holding too much in cash for too long can be a mistake. Cash feels safe, but it may lose value over time because prices rise. So keep cash for stability, but do not let it become your whole strategy.

Then use your pension carefully

A pension is often the next pot to use, but you need to be careful.

You can usually take 25% tax-free, but that does not mean you should take all of it at once. If you take too much too early, you may move money out of a useful pension wrapper and leave it sitting in cash doing very little.

Better questions are:

• How much taxable income do I need this year?

• How much of my lower tax bands do I want to use?

• Am I filling the gap before my State Pension starts?

• Will I still want to pay into pensions later?

That last point matters. If you start taking taxable income from a defined contribution pension, you may trigger a rule called the Money Purchase Annual Allowance. That can cut the amount you can later pay into pensions with tax relief to £10,000 a year.

That can be a problem for people who are semi-retired, may work again, or still want to build their pension.

Use your ISA as the flexible top-up

ISAs are valuable because money taken out is usually tax-free. That makes them useful for:

• topping up income without creating more tax

• paying for one-off costs

• helping in years when other income is already high

• giving flexibility when life or markets change

So an ISA is often not the first pot to empty. It is often the pot that helps you stay in control. If you have already taken enough from your pension for the year, your ISA can provide the rest without adding to your tax bill.

A simple order

A practical approach is:

1. Keep enough cash for short-term needs

2. Count any secure income first, such as final salary pensions, annuities, rent, or later the State Pension

3. Take pension income up to a sensible tax level

4. Use your ISA for the rest

5. Review the plan each year

Example

Imagine a couple retiring at 60 with cash, ISAs and defined contribution pensions, but no State Pension yet. A poor plan would be to take a big pension lump sum straight away, pay more tax than needed, leave too much sitting in cash, and then struggle later.

A better plan may be to:

• Keep 12 to 24 months of spending in cash

• Take a measured amount from pensions each tax year

• Use ISA withdrawals to top up the rest

• Adjust the plan again when the State Pension starts

This often works better because the years before the State Pension starts may give more room to use pension withdrawals well. Once the State Pension starts, you may already have more taxable income, so the ISA becomes even more useful.

Common mistakes

• Taking the tax-free lump sum just because you can

• Using only cash and ISAs and ignoring pension tax planning

• Taking too much from the pension in one year

• Triggering the MPAA by accident

• Forgetting that the best plan at 58 may not be the best plan at 67

The real answer

For most people, the answer is: Cash for short-term safety. Pension for planned income. ISA for flexible tax-free top-ups.

Not random withdrawals. Not taking a big lump sum and hoping for the best. Not one rule for everyone. A good retirement income plan is less about finding the perfect product and more about taking money from the right place, in the right amount, at the right time.

Saving money and spending money well are different skills. While you are working, the job is to build your wealth. In retirement, the job is to draw from it in a smart way. That is why the order you take money from matters.

If you need advice, we’re here to help. Schedule a free, no-obligation chat here. A guide on selecting a financial advisor is also available here.