Withdrawal Order in Retirement

One of retirement’s most common questions

In brief: The same total income drawn from different accounts produces different tax bills. The order you draw from your accounts across retirement can make a meaningful difference to how much you pay in tax, and therefore how long your money lasts. This page explains the mechanics. What makes sense for any individual depends on their full income picture — which is why modelling it matters.

“Which account do I draw from first?” is one of the most frequently asked questions about retirement income — and one of the hardest to answer without doing the maths. It is not a question with a single correct answer. It depends on the size of each account, your income from other sources, your tax position in each year, and when your State Pension starts.

What is possible to explain clearly is the mechanics: how different accounts are taxed on withdrawal, and how those differences interact.

How different accounts are taxed when you withdraw

Each account type has its own tax treatment on the way out. These differences are the reason the order matters.

Cash

Withdrawals from a cash savings account are not taxable — you are simply accessing your own money. However, the interest earned on cash is taxable income (above the Personal Savings Allowance of £500 for higher-rate taxpayers or £1,000 for basic-rate taxpayers in 2026/27). The interest accrues whether or not you make withdrawals, so the account balance itself does not change your tax position when you draw it down.

ISA

Withdrawals from an ISA are completely tax-free — on both the original capital and any growth. There is no limit on how much you can withdraw, and withdrawals do not count as income for tax purposes. This means drawing from an ISA in any given year does not push you into a higher tax band or affect your Personal Allowance.

General Investment Account (GIA)

When you sell investments held in a GIA, Capital Gains Tax (CGT) applies to the gain — the difference between what you paid for the holding and what you receive when you sell. The first £3,000 of gains each tax year (2026/27) is covered by the Annual Exempt Amount and is not taxable. Gains above this threshold are taxed at 18% (basic rate) or 24% (higher rate). Note that only the growth is taxable, not the full withdrawal amount. Unlike income tax, CGT does not affect your income tax bands.

SIPP in Drawdown (after crystallisation)

Once a SIPP has been crystallised, withdrawals from the drawdown pot are 100% taxable as income. The tax-free element was already taken at crystallisation (as a Pension Commencement Lump Sum). Drawdown income is added to your other income for the year — State Pension, any employment income, rental income — and taxed at your marginal rate.

A £20,000 drawdown withdrawal, on top of a full State Pension of £12,548, gives total income of £32,548. The tax on that is approximately £3,996 (20% on the £19,978 above the Personal Allowance of £12,570).

SIPP via UFPLS (uncrystallised)

An Uncrystallised Funds Pension Lump Sum (UFPLS) draws directly from an uncrystallised pension. Each withdrawal splits 25% tax-free and 75% taxable as income. So a £20,000 UFPLS creates £5,000 of tax-free cash and £15,000 of taxable income — which is still added to your other income for the year.

For a detailed comparison of UFPLS and flexi-access drawdown, see UFPLS vs Flexi-Access Drawdown.

Premium Bonds

Prize winnings from Premium Bonds are tax-free and do not count as income. When you cash in Premium Bonds, the capital is returned tax-free — no income tax, no CGT. The return is variable (depending on prize luck) and there is no guarantee of a specific income, but from a tax perspective the withdrawal is clean.

Approaches people explore

There is no universal answer to which order is right. What follows are approaches that people consider, along with the tax mechanics that make them worth exploring. Each approach produces different outcomes depending on the specific numbers involved.

Drawing from a GIA first, then ISA, preserving the SIPP

One approach is to draw down the GIA while using the Annual Exempt Amount for CGT each year, then move to the ISA, leaving the SIPP as late as possible. The logic is that GIA gains can be managed within the CGT allowance and ISA withdrawals are tax-free, so neither creates taxable income. The SIPP — which produces fully taxable income — is preserved for later years when it may be drawn in smaller amounts.

The tax mechanics here depend heavily on how much gain sits in the GIA (the original cost versus current value), how large the ISA is, and how long it takes to exhaust both before needing to access the pension.

Drawing from the SIPP early, before State Pension starts

Another approach is to draw from the SIPP in the years before the State Pension starts — while the Personal Allowance of £12,570 is mostly unused. In those years, up to £12,570 of pension income is tax-free, and the basic-rate band up to £50,270 has more room.

Once the State Pension begins at £12,548 per year (2026/27), it uses nearly all of the Personal Allowance. After that point, even modest additional income is taxed from almost the first pound. Drawing the SIPP down before this point can, depending on the amounts involved, mean paying less tax overall on the same total withdrawals.

Using the ISA to bridge gaps when other income is high

A third approach is to use the ISA selectively — drawing from it in years when other income would otherwise push into the higher-rate band. Because ISA withdrawals are not treated as income, they can top up spendable income without affecting the tax calculation. This is sometimes used in years when a property sale, DB pension income, or a large UFPLS creates a spike in taxable income.

None of these is universally preferable

Each approach described above produces different tax outcomes for different people. Someone with a large SIPP and a small ISA faces different constraints from someone with the reverse. Someone who started their State Pension already faces different dynamics from someone who retired at 55 and has twelve years before State Pension age.

The point is not that one ordering is better — it is that the tax consequences are real and quantifiable, and the only way to understand the impact for a specific situation is to model it.

The State Pension complication

The State Pension adds a layer of complexity that changes the arithmetic in any year it is in payment.

The full new State Pension is £12,548 per year (2026/27) — almost exactly equal to the Personal Allowance of £12,570. This means that once the State Pension starts, almost all of the Personal Allowance is consumed by it. Any additional taxable income — even £1,000 of drawdown — becomes immediately taxable at 20%.

Before State Pension age, the Personal Allowance provides more headroom. A retiree with no other income can draw up to £12,570 from a SIPP drawdown pot in a single year and pay no income tax at all. Once the State Pension is in payment, that headroom shrinks to around £22 (£12,570 minus £12,548).

This is not a reason to avoid the State Pension — it is simply a factor that changes the withdrawal arithmetic from the year it starts. The same total income in a year with the State Pension active produces a higher tax bill than the same total income in a year without it.

Why modelling matters

The tax consequences of withdrawal ordering are real, but they are not calculable by mental arithmetic for most people. The numbers depend on:

• The balance in each account at each point in time
• The income tax bands in the year of withdrawal
• Whether the State Pension is in payment
• Whether other income sources (rental income, DB pension, part-time earnings) are active
• The CGT position of GIA holdings

No general rule captures all of this. The impact of a particular ordering emerges over years and decades, not in a single calculation.

The only way to understand how different orderings affect a specific retirement income picture is to model them — run the same scenario with different withdrawal sequences and compare the results year by year. This shows the tax bill each year, the account balances over time, and how long each approach sustains the desired income.

How FutureClear handles withdrawal order

In FutureClear, withdrawal order is entirely user-defined. You set the sequence by dragging asset types into the order you want — for example: GIA first, then ISA, then SIPP drawdown. The engine applies your stated ordering mechanically each year, drawing from each account in sequence until your income target is met.

Because you control the ordering, you can run multiple scenarios with different sequences and compare the outcomes side by side. The engine shows the tax due each year, the remaining balance in each account, and how many years each approach sustains your target income. The results are a direct output of your inputs — the ordering you set, the account sizes you enter, and the income target you specify.

These projections are for modelling purposes only. They do not constitute financial advice. Tax rules are subject to change. Please consult a qualified financial adviser before making financial decisions.