Maxed out your ISA allowance? What to do next with your savings

This article walks through practical next steps for UK savers who have reached their ISA limit. We cover the allowances you may not be using fully, alternative wrappers, and family planning strategies. Everything here is educational, not personal financial advice. Tax treatment depends on your individual circumstances and may change. For decisions about your own situation, speak with a qualified financial adviser.

Understanding the current ISA allowance limits

Before exploring alternatives, let us confirm exactly what you’re working with and how the rules apply.

The £20,000 annual limit explained

The ISA allowance for the 2026/27 tax year stands at £20,000. This is the maximum total you can contribute across all your ISA accounts within a single tax year. The limit has remained at this level since the 2017/18 tax year.

Once you’ve contributed £20,000, that’s it until 6 April. You can’t contribute more, even if you withdraw money from your existing ISA. The allowance doesn’t refresh based on withdrawals during the same tax year, although certain flexible ISAs allow replacement of withdrawn funds without affecting your remaining allowance.

One important change to note: from 6 April 2027, the government is reducing the cash ISA limit to £12,000 for savers under 65, while maintaining the overall £20,000 ceiling for stocks and shares ISAs. If you’re under 65 and put in £12,000 into a cash ISA, you can put the remaining £8,000 into a investment-type ISA, such as a stocks & shares ISA.

How the allowance works across different ISA types

Your £20,000 can be divided however you choose across the main ISA types:

Lifetime ISA has its own £4,000 sub-limit and counts toward your overall £20,000. Rules on subscribing to multiple ISAs in the same tax year have changed in recent years; check current HMRC rules and your provider’s terms on whether you can pay into more than one ISA of the same type.

Understanding these cash ISA rules matters because the flexibility affects how you might approach the alternatives below.

Tax-efficient options after reaching your ISA limit

Once your ISA is full, other allowances and wrappers can shelter some of your returns from tax. None offers quite the same simplicity as an ISA, but each has its place.

Using your personal savings allowance

The personal savings allowance lets you earn interest on savings held outside an ISA without paying tax, up to certain limits.

If you pay basic rate tax, you can earn up to £1,000 in interest from standard savings accounts, fixed-term bonds, or similar products before any tax applies. For higher rate taxpayers, this drops to £500. Additional rate taxpayers receive no allowance.

This makes the personal savings allowance useful for parking excess cash after you’ve reached your cash ISA max. At current interest rates, a basic rate taxpayer might hold roughly £20,000 to £25,000 in a standard easy-access account before exceeding the £1,000 threshold, depending on the rate offered.

Understanding the capital gains tax allowance

If you hold investments outside an ISA and sell them at a profit, the capital gains tax allowance shields some of that gain from tax.

The capital gains tax allowance for 2026/27 is £3,000. This is the amount of gains you can realise in a tax year before CGT applies. The allowance has reduced significantly in recent years, falling from £12,300 in 2022/23.

Capital gains tax rates depend on your income tax band and the type of asset:

The reduced allowance means careful management becomes more important for investments held outside tax wrappers. Some investors use a technique called "bed and ISA" to crystallise gains within the allowance each year, selling holdings in a general account and repurchasing within an ISA. However, this requires available ISA allowance and has its own considerations around timing and costs.

The dividend allowance for investment income

If you hold dividend-paying shares or funds outside an ISA, the dividend allowance applies. For the 2026/27 tax year, this stands at £500. Dividends received above this amount are taxed at:

• 8.75% for basic rate taxpayers

• 33.75% for higher rate taxpayers

• 39.35% for additional rate taxpayers

The dividend allowance has also fallen substantially from £2,000 in 2022/23. This makes holding income-producing investments outside ISAs less attractive than it once was, particularly for higher earners.

Pension contributions and tax relief

Pensions offer significant tax advantages that can make them more attractive than ISAs for some savers, despite the restrictions on access.

When you contribute to a pension, you receive tax relief at your marginal rate. For a basic rate taxpayer, a £100 contribution costs £80 after tax relief. Higher rate taxpayers can claim additional relief through their tax return, effectively reducing the net cost further.

The annual pension allowance is £60,000for most people, or 100% of your earnings if lower. This is considerably higher than the ISA limit.

However, pensions come with restrictions:

• Access typically from age 55 (rising to 57 from 2028)

• 25% can usually be taken tax-free; the rest is taxed as income

• Lifetime limits exist for tax-free lump sums

• Contributions depend on having earnings or being in a registered scheme

Pension contributions can be particularly efficient for higher and additional rate taxpayers who expect to pay a lower rate in retirement. But the access restrictions make them unsuitable if you may need the money before retirement age.

General investment accounts (GIAs) – what to know

A general investment account holds investments outside any tax wrapper. Returns are subject to income tax and capital gains tax at normal rates.

Why would anyone use one? Several reasons:

• No contribution limits

• Full flexibility on withdrawals

• Access to the same investments as ISAs

• Useful for amounts exceeding all available allowances

The trade-off is clear: you lose the tax shelter. But the allowances discussed above still apply. You can use your £3,000 capital gains allowance, £500 dividend allowance, and personal savings allowance to shelter some returns.

For investors who have genuinely exhausted all other options, a GIA allows continued investment. Some maintain both ISA and GIA holdings, prioritising the ISA wrapper each year while using the GIA for overflow.

Tax reporting becomes more complex with a GIA. You must track gains, losses, and dividends for your self-assessment return. Some platforms provide consolidated tax reports, but accuracy remains your responsibility.

Remember that all investments carry risk. The value of your investments can go down as well as up, and you may get back less than you invested.

Using your partner's or child's ISA allowances

If your own allowances are exhausted, household planning may offer routes to shelter more from tax.

Spousal ISA planning considerations

Your spouse or civil partner has their own £20,000 ISA allowance, entirely separate from yours. If they have not used it fully, you might consider gifting them money to invest in their ISA.

Several points to consider:

• Transfers between spouses and civil partners are generally free of capital gains tax and inheritance tax

• Once the money is in their ISA, it belongs to them legally

• You can’t put money directly into another adult's ISA; they must make the contribution themselves

• Both parties should be comfortable with this arrangement

This is not available for unmarried partners. The tax advantages apply specifically to spouses and civil partners.

Be realistic about your relationship and circumstances. If there is any prospect of separation, gifted money in a spouse's name is their asset. This strategy suits couples with strong financial alignment and shared goals.

Junior ISA contributions

If you have children under 18, Junior ISAs offer another tax-efficient option. The Junior ISA allowance for 2026/27 is £9,000.

Junior ISA features:

• Available as cash or stocks and shares versions

• Money belongs to the child and becomes accessible at age 18

• Any adult can contribute (grandparents, family friends)

• Can’t be withdrawn before the child turns 18

The key consideration is control. Once the child reaches 18, the money is theirs to spend as they choose. There is no mechanism to restrict access or direct how it’s used. For some families, this is ideal. For others, alternative arrangements like a trust may suit better.

Planning ahead for the new tax year

Strategic timing helps maximise your allowances year after year.

When does the ISA allowance reset?

Your ISA allowance resets on 6 April each year. This is the start of the UK tax year. The full allowance becomes available again, regardless of what you contributed in the previous year.

Unused allowance doesn’t carry forward. If you contribute only £5,000 in one tax year, you can’t add the remaining £15,000 to next year's limit. Use it or lose it.

Preparing for 6 April

If you regularly max out your ISA, consider these steps:

Some investors contribute their full allowance on 6 April. This maximises the time their money spends in the tax-efficient wrapper, benefiting from potential growth throughout the year. This approach assumes you have the funds available and do not need them for other purposes.

Others prefer regular monthly contributions. This spreads purchases across different market conditions, potentially reducing the impact of short-term volatility.

If you plan to use your spouse's allowance or contribute to a Junior ISA, there will be some more organising involved. You might wish to prioritise the accounts which benefit the most from an early contribution.

Key points to remember

Tax rules are complex and subject to change. The allowances and rates mentioned here reflect the position for the 2026/27 tax year. Government policy can shift, and individual circumstances vary enormously.

Key takeaways:

• The ISA allowance for 2026/27 is £20,000 total across all ISA types

• After reaching your ISA limit, the personal savings allowance, capital gains tax allowance, and dividend allowance can shelter some returns

• Pension contributions offer significant tax relief but restrict access until retirement age

• Spousal ISA planning and Junior ISAs extend household tax efficiency

• Your allowance resets on 6 April each tax year and unused portions do not carry forward

• The cash ISA limit is scheduled to reduce to £12,000 for under-65s from April 2027

If you can take money out of your ISA and replace it within the same tax year, check whether your ISA is flexible. Flexible ISAs allow you to replace your investment without affecting your remaining allowance. Standard ISAs do not offer this feature.

This article provides general information about tax-efficient saving options. It’s not personal financial advice. Tax treatment depends on your individual circumstances and may change. Before making decisions about your savings and investments, consider seeking professional advice suited to your situation. All investments carry risk. The value of investments can fall as well as rise, and you may receive back less than you originally invested.