Child Maintenance Calculator

Paying parent's gross income

Before tax, but after workplace pension deductions

Additional pension contributions (optional)

Personal pension payments not already deducted from salary

£ /month

Paying parent receives income-based benefits (JSA, ESA, Income Support, Pension Credit)

Children to pay for

Living with the other parent

Other children in household

Living with paying parent

Shared care nights per year

Nights children stay with paying parent (52+ nights reduces payment)

0 nights 0 nights 182 nights

Estimated weekly payment

£0

per week

Monthly

£0

Yearly

£0

Rate applied: —

⚠️ Income capped at £3,000/week. The receiving parent can apply to court for additional maintenance above this amount.

Gross weekly income: £0

After adjustment for other children: £0

Children covered: 1

⚠️ Estimate only

This calculator provides an estimate based on CMS formulas. The actual amount may differ. For an official calculation, use the GOV.UK calculator or contact the Child Maintenance Service on 0800 171 2345.

CMS Rate Bands (2025/26)

Nil rate

Under £7/wk or on benefits

Flat rate

£7–£100/wk → £7

Reduced rate

£100–£200/wk → £7 + 17–31%

Basic rate

£200–£800/wk → 12–19%

Basic plus

£800–£3,000/wk → 9–15%