When it comes to saving for retirement, you may immediately focus on making regular contributions to a pension, but that isn’t your only option.

Combining pensions and ISAs could help you build a flexible and tax-efficient retirement savings strategy. Here’s how they compare and why using them together could give you the best of both worlds.

Upfront tax relief makes pensions an attractive proposition

One of the biggest advantages of paying into a pension is the tax relief.

For every £80 you contribute, the government tops it up to £100 – this typically happens at source, so if you’re a basic-rate taxpayer, there’s no extra legwork required. However, if you’re a higher- and additional-rate taxpayer, you’ll need to claim the extra relief through Self Assessment.
 
Read more: Are you leaving money on the table? How to claim all the pension tax relief you're owed

Usually, you can receive tax relief on contributions up to 100% of your earnings or £60,000 – whichever is lower.

If you’re employed and a member of your workplace pension, you’ll also benefit from employer contributions. Auto-enrolment rules mean employers must contribute at least 3% to employee pensions. Plus, some employers may increase contributions or match whatever you pay in.

Thanks to the powerful effects of compounding, over time your pension contributions, along with employer contributions and tax relief at your marginal rate, could add up to a healthy retirement pot.

Not only that, but pensions also grow free from Income Tax and Capital Gains Tax (CGT). And, over decades, tax-efficient growth could make a meaningful difference.

The only catch is that you can’t normally access your pension savings until age 55 (rising to 57 from 2028). When you do access it, you can typically take up to 25% tax-free, but the rest will be taxed as income.

ISAs are also tax-efficient and could provide more flexibility

Stocks and Shares ISAs also allow your investments to grow free from Income Tax and CGT. But the tax benefit works differently.

Unlike the upfront tax relief you receive with your pension contributions, with ISAs, the tax advantages come when you access your funds, as everything you withdraw from an ISA is tax-free.

Plus, rather than being restricted by age, you can access your ISA whenever you like. 

With no minimum age, no access restrictions, and no tax to pay on withdrawals, you could use your ISA to:

• Boost your income if you want to reduce working hours and phase into retirement
• Support your early retirement years, allowing you to leave your pension invested for longer
• Fund large one-off expenses.

The one thing to remember is that you have an annual ISA allowance – in 2025/26 and 2026/27 you can pay up to £20,000 across all ISAs each tax year. 

Depending on your age, a Lifetime ISA could present a useful retirement option

If you're aged between 18 and 39, a Lifetime ISA (LISA) could help you benefit from all the usual ISA tax advantages, and earn additional support from the government.

While you can only pay up to £4,000 into a LISA (2025/26 and 2026/27), the government tops this up with an extra 25% payment. So, if you pay in the maximum amount, you get another £1,000 chunk of tax-free cash from the state.

The bonus is paid every year you save into your LISA, until you hit age 50.

You can use a LISA to save for a deposit for your first home, your retirement, or both.

Rules for use:

• First home – can be used to purchase a property worth up to £450,000, provided the account has been open for at least 12 months.
• Retirement – you can withdraw the funds from age 60 and retain all the tax benefits. If you withdraw funds before age 60 for any other reason, you could face a 25% penalty.

Saving through your pension and an ISA could be a winning strategy 

With strategic planning, ISAs and pensions can work together to boost your retirement income and provide valuable tax-efficient flexibility.

Get in touch
If you’d like to explore how pensions and ISAs could support your retirement plan, please get in touch. 
Email [email protected] or call us on 0800 048 0150.

Please note
The information contained in this article is based on the opinion of Titan Wealth Planning and does not constitute financial advice or a recommendation for any investment or retirement strategy.
All information is correct at the time of writing and is subject to change in the future.
Please do not act based on anything you might read in this article. All contents are based on our understanding of HMRC legislation, which is subject to change.
The Financial Conduct Authority does not regulate estate planning or tax planning.
A pension is a long-term investment not normally accessible until 55 (57 from April 2028). The fund value may fluctuate and can go down, which would have an impact on the level of pension benefits available. Past performance is not a reliable indicator of future performance. 
The tax implications of pension withdrawals will be based on your individual circumstances. Thresholds, percentage rates, and tax legislation may change in subsequent Finance Acts. 
Workplace pensions are regulated by The Pensions Regulator.
The value of your investments (and any income from them) can go down as well as up and you may not get back the full amount you invested. Past performance is not a reliable indicator of future performance.