- Yes. ISAs count as capital for Universal Credit. Both Cash ISAs and Stocks and Shares ISAs are included. The full market value of the ISA on the date of your assessment is what DWP uses.
- Below £6,000 total capital: no effect on UC. Between £6,000 and £16,000: tariff income reduces UC by £4.35/month per £250 (or part of £250) above the lower threshold. Above £16,000: standard UC is not normally payable.
What exactly gets counted
DWP counts most types of savings and investments as capital: Cash ISAs, Stocks and Shares ISAs, Lifetime ISAs, Innovative Finance ISAs, savings accounts, current account balances, Premium Bonds, shares and investment funds.
What does NOT count: the home you live in, personal possessions, the value of a pension pot (if not yet drawn), and some specifically disregarded payments such as personal injury compensation held in a trust.
How the tariff income rule works on your ISA
If your Cash ISA holds £9,500, the first £6,000 is ignored. The remaining £3,500 falls in the tariff band. DWP calculates £3,500 ÷ £250 = 14 complete bands (£3,500 is exactly divisible by £250), so 14 × £4.35 = £60.90/month of assumed income. That assumed income reduces your UC by £60.90/month.
If your ISA grows in value, say a Stocks and Shares ISA gains £1,000, the new value is reassessed at your next UC review. DWP uses the market value at the time of assessment, not the original deposit.
Lifetime ISA, a special case
A Lifetime ISA (LISA) counts as capital for UC, but DWP's own guidance values it at 75% of its surrender value while you are under 60, reflecting the withdrawal charge, and at 100% from 60. So a LISA holding £20,000 counts as £15,000 of capital if you are under 60.
If you have a LISA near the £16,000 threshold, this is worth discussing with an adviser before taking any action. Withdrawing LISA funds solely to reduce capital could be treated as deprivation of capital.
Couples and joint assessments
On a UC joint claim, both partners' capital is added together. If one partner holds £5,000 in an ISA and the other holds £8,000 in a Cash ISA, the combined £13,000 falls in the tariff band: £7,000 above the £6,000 threshold ÷ £250 = 28 bands × £4.35 = £121.80/month assumed income reduction.
There is no way to split assessment between partners on a joint claim. Both partners' ISAs and savings are always pooled.
When to check the savings impact calculator
The savings impact calculator on this site lets you enter any savings figure and see the exact monthly UC deduction. If you are planning to open an ISA, close one or transfer between types, check the calculator first to understand where you sit relative to the £6,000 and £16,000 thresholds.