Gilts vs Savings Account: A Yield Comparison for UK Savers

Cash in a savings account feels safe and simple. You open it, the interest lands, and you can usually get your money back fast. Gilts, which are loans to the UK government, work differently. They pay a fixed coupon and can be bought and sold on the market. Both can give you a steady return. The gap between them often comes down to tax and how quickly you need your money.

This guide walks through the numbers using live gilt data from 8 September 2026, then sets them against typical savings rates.

What the live gilt data shows

Short-dated gilts are the fairest comparison for savers, because they behave a bit like a fixed-term deposit. You hold to maturity, you get your money back, and the return is known in advance.

A few examples from the current market:

• UK Treasury 4.125% 2027 has a yield to maturity of 4.1%, with under half a year to run.
• UK Treasury 4.5% 2028 yields 4.47% to maturity, at a clean price of 100.05.
• UK Treasury 4.375% 2028 yields 4.44%, maturing in about a year and a half.
• UK Treasury 4.000% 2029 yields 4.62%, with under three years left.

Yield to maturity is the total annual return if you buy at today's price and hold until the bond repays. It rolls together the coupon plus any gain or loss versus the price you pay. That last part matters, and it leads to the tax point below.

The tax trick that favours some gilts

Here is where gilts can quietly beat a savings account.

Savings interest is taxable once you use up your Personal Savings Allowance. Basic-rate taxpayers get £1,000 of savings interest tax free each year. Higher-rate taxpayers get £500. Above that, interest is taxed at your income tax rate.

Gilts are taxed differently. The coupon counts as income and is taxable in the same way. But the capital gain on a gilt, the difference between the price you pay and the £100 you get back at maturity, is free of Capital Gains Tax. That rule is specific to UK government bonds.

This makes low-coupon gilts trading below par attractive to anyone paying tax outside a tax shelter. Look at UK Treasury 0.375% 2030. It has a clean price of 84.46 and a yield to maturity of 4.68%. Most of that return comes from the price climbing back to £100 by maturity, not from the tiny 0.375% coupon. That capital part is tax free.

Compare it with UK Treasury 4.75% 2030, which yields 4.56% but pays almost all of its return as a taxable coupon. Similar gross yields, very different after-tax outcomes for a taxed investor.

Inside an ISA or pension, this edge disappears, because savings interest there is already tax free. The gilt tax advantage matters most in a taxable account.

Setting gilts against savings rates

Easy-access savings accounts have paid somewhere around 4% to 5% in recent times, though the rate can move at the bank's discretion. Fixed-rate bonds from banks lock a rate for a set term.

Hold a short gilt like UK Treasury 4.000% 2029 at a 4.62% yield and you have a known return over nearly three years. A fixed savings bond might match the headline rate. The difference shows up after tax, especially for higher-rate payers using low-coupon gilts.

A rough way to think about it:

• Gross yield: gilts and savings can look similar today.
• After tax: low-coupon gilts held outside an ISA can pull ahead for taxed savers.
• Certainty: a fixed savings bond and a gilt held to maturity both give a known result. An easy-access account does not, because the rate can change.