Second Adult Rebate vs Single Person Discount Compared 2026

Two separate council tax reductions can each cut a bill by 25%, and both happen to cap out at exactly that same top rate — yet a single household can only ever qualify for one of them, never both at once. The mix-up is understandable, since Single Person Discount and Second Adult Rebate are often mentioned in the same sentence. In practice they test opposite facts about who lives in a home, not two strengths of the same scheme.

Single Person Discount: a flat 25%, no income test

Single Person Discount is set out in section 11 of the Local Government Finance Act 1992. It applies the moment a dwelling has only one resident who isn't disregarded for discount purposes (certain full-time students, severely mentally impaired people and a short list of other categories don't count towards the headcount — see Homecost's guide to the SMI disregard). There is no means test. A sole occupier earning £18,000 a year gets exactly the same 25% off as one earning £180,000.

Applied to 2026-27 Band D figures:

Second Adult Rebate: a completely different question

Second Adult Rebate — the regulations call it the "alternative maximum council tax reduction" — doesn't ask whether you live alone. It asks the opposite: whether you live with a second adult who isn't your partner, isn't jointly liable for the council tax, and has a low income of their own. It exists only inside a Council Tax Reduction claim (the means-tested support scheme), and it's calculated on that second adult's income rather than the claimant's own — a route that can help someone whose own income is too high to qualify for ordinary reduction, but who shares their home with someone who earns very little.

The percentage bands, set out in Schedule 3 to the Council Tax Reduction Schemes (Prescribed Requirements) (England) Regulations 2012 and most recently uprated for financial years from 1 April 2026, are:

Applied to the same three areas:

The top Second Adult Rebate tier and Single Person Discount produce an identical cash saving — both are 25% of the same bill — despite testing opposite household circumstances. That coincidence of rate is probably where the idea that the two schemes compete with each other comes from.

Why the two can never apply to the same home

Single Person Discount requires the liable person to be the only non-disregarded resident. Second Adult Rebate requires a second, non-disregarded adult to be living there, earning their own income. A dwelling cannot simultaneously have no second resident and a second resident — so the two are mutually exclusive by definition, not because a council weighs them against each other and picks a winner. If a second adult moves in, Single Person Discount stops; it doesn't get swapped for Second Adult Rebate automatically, because Second Adult Rebate only arises inside a separate means-tested Council Tax Reduction application.

The "whichever is greater" rule — and it isn't about these two

There genuinely is a rule in the regulations requiring a council to award "whichever is the greater" of two reduction amounts (Schedule 1, paragraph 10(6) of the 2012 Regulations). It's easy to assume this is the Single Person Discount/Second Adult Rebate comparison — but it isn't. It applies within a single Council Tax Reduction claim, comparing the ordinary reduction calculated on the applicant's own income against the alternative maximum (Second Adult Rebate) calculated on a second adult's income. A council runs both sums for a qualifying claim and pays whichever is bigger. Single Person Discount, by contrast, is a separate statutory discount under section 11 — it was never part of that comparison.

One rule nationally, delivered locally

The percentage table above is the mandatory default scheme that every council must offer to applicants who have reached State Pension age. For working-age applicants, each billing authority has designed its own local Council Tax Reduction scheme since the Local Government Finance Act 2012 inserted Schedule 1A into the 1992 Act and abolished the old national Council Tax Benefit. A working-age council's own scheme may use different percentages, different income bands, or may not include a Second Adult Rebate route at all. The figures here describe the national default — check a specific council's published scheme before assuming they apply to a working-age claim.

Part of a wider toolkit

Single Person Discount can combine with other reductions that depend on the property rather than who lives in it — Homecost has separately quantified it stacking with the Disabled Band Reduction Scheme (a combined saving three times the reduction alone at Band D) and with the Severely Mentally Impaired disregard (a constant 4x between discount and full exemption). Second Adult Rebate sits apart from that stack entirely, because by the time a second adult is in the picture, Single Person Discount has already stopped applying. For the full A–H band structure both schemes sit on top of, see the council tax bands explainer.

To see how either reduction would change the all-in monthly cost of a specific home, try the Homecost true cost tool with a postcode of your own, or browse more buyer guides.

This is general information about how the national default scheme works, not a benefits calculation for any individual household. Council Tax Reduction and Second Adult Rebate are means-tested and administered locally — contact your council's benefits team to apply, or speak to a qualified adviser before making decisions based on your own circumstances.