Calculate how surplus earnings in one month affect your Universal Credit in future months. Understand the de minimis threshold and carry-over rules.
| Month | Surplus Carried In | Actual Earnings | Total Treated Earnings | UC Award | Surplus Carried Forward |
|---|
| Work Allowance Type | Monthly Amount 2025/26 | Who Qualifies |
|---|---|---|
| Higher work allowance | £404/month | Claimants with no housing element in UC (i.e. not receiving UC housing costs) |
| Lower work allowance | £160/month | Claimants who receive a housing element in UC |
| No work allowance | £0 | Couples where neither member has limited capability for work or children |
Surplus earnings arise in UC when your monthly earnings are so high that your UC award reduces to zero, AND your earnings exceed the de minimis threshold (£2,500 above the nil UC threshold). The excess is carried over to your next assessment period and treated as if it were earned that month, reducing or eliminating future UC payments until the surplus is exhausted.
The de minimis threshold is £2,500. Surplus earnings only arise if your earnings exceed your nil UC threshold by more than £2,500. This was raised from £300 in July 2020 to help workers with variable income without being penalised for a single good month.
The work allowance is an amount of earnings you can keep before UC is reduced. The higher rate (£404/month) applies if you don't get housing costs in UC. The lower rate (£160/month) applies if you do get a housing element. Above the work allowance, UC reduces at 55p per £1 earned.
The UC taper rate in 2025/26 is 55%. For every £1 you earn above your work allowance, your UC reduces by 55p. The taper rate was reduced from 63% to 55% in November 2021.
Surplus earnings carry over until exhausted. Each month, your UC is calculated using actual earnings plus any remaining surplus. There is no fixed maximum carry-over period — it depends on how large the original surplus was and your monthly earnings.
Earnings include employment income and self-employed income (after allowable expenses). They are calculated net — after income tax, National Insurance, and pension contributions. They do not include benefits, maintenance payments, or investment income below a threshold.
The nil threshold is the level of earnings at which your UC award reaches exactly zero. Formula: nil threshold = work allowance + (maximum UC / 0.55). Above this level, the UC award is £0.
Self-employed claimants are subject to the Minimum Income Floor (MIF) after 12 months. If actual earnings are below the MIF, UC treats you as if you earned the MIF. This can affect surplus calculations — actual surplus is based on the higher of actual earnings or the MIF.
HMRC RTI reports earnings based on payment date. Deliberately deferring income to manipulate UC assessments could be treated as benefit fraud. Seek advice from Citizens Advice if you have variable income concerns.
A UC assessment period is a rolling calendar month starting from the date you made your first UC claim. Your earnings and circumstances are assessed over each assessment period. Assessment periods do not align with calendar months — they run from your specific claim date.
Free support from: Citizens Advice (welfare benefit advice), Turn2us (benefits calculator), Policy in Practice (Better Off calculator), and the government's Help to Claim service. If a UC decision is wrong, you have the right to request a Mandatory Reconsideration within one month.
Capital between £6,000 and £16,000 reduces your UC by £4.35/month per £250 above £6,000 (tariff income). Capital above £16,000 means no entitlement to UC. Your main home and business assets are disregarded.