Croydon Council Tax Non-Dependant Deductions: How Other Adults Affect Your Reduction

If another adult lives in your Croydon home — an adult child, a relative, a lodger — Croydon may deduct a fixed weekly amount from your Council Tax Reduction. These non-dependant deductions can take a significant chunk out of your discount, and the rates depend on what that person earns. Pensioner and disabled non-working claims are excluded from these deductions.

Who Counts as a Non-Dependant

A non-dependant is any person aged 18 or over living in your property who is not your partner and not a joint tenant on the Council Tax bill. The most common examples:

• Adult children still living at home
• Elderly parents you're caring for
• Siblings or other relatives
• Lodgers or friends sharing your home

Your partner is never a non-dependant — their income is already included in your household assessment.

The Deduction Tiers

Croydon applies fixed weekly deductions for most claims; pensioner and disabled non-working claims are excluded:

Multiple non-dependants mean multiple deductions. Two adult children — one earning £22,000 and one earning £26,000 — would trigger £10 + £30 = £40/week in deductions from your CTS award.

Who Is Exempt (Zero Deduction)

Some non-dependants don't trigger any deduction at all:

Based on the applicant's status:

• Croydon does not apply non-dependant deductions to pensioner or disabled non-working claims

Based on the non-dependant's status:

• Under 18 years old
• A full-time student
• Receiving Pension Credit
• Under 25 and receiving Income Support or ESA (assessment phase)
• A prisoner

If an adult child is at university full-time, they don't trigger a deduction even if they're home during holidays. But once they graduate and start working, the deduction kicks in.

The Practical Impact

These deductions bite hardest for households that otherwise qualify for the highest discount bands. If you're a single parent on the 75% band and an adult child starts full-time work at £25,000, the £30/week deduction comes straight off your CTS — that's about £1,560/year less support.

The deduction is applied after your percentage discount is calculated, so it reduces the pound amount of your award rather than changing your band. A smaller base discount combined with a large deduction can leave very little CTS remaining.

What If They Won't Share Income Details

The council needs to know each non-dependant's income to set the right deduction tier. If a non-dependant refuses to provide payslips or benefit statements, Croydon may apply the highest deduction rate (£30/week) by default. It's in your interest to get their cooperation, even if the conversation is awkward.

For a detailed breakdown of how non-dependant deductions interact with each income band, plus guidance on what evidence to provide for exempt non-dependants, see the Croydon Council Tax Reduction guide.

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