Official CMS Formula • 2024-25 Rates • England & Wales
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1Paying Parent's Income
Annual: £31,200 | Monthly: £2,600
None
2Children to Support
2 children (16% basic rate)
3Shared Care Arrangements
052104156175182
52 nights/year≈ 14% of time
0-51No reduction
52-103One-seventh (14%)
104-155Two-sevenths (29%)
156-174Three-sevenths (43%)
175-365Half + £7 offset
4Collection Method
Direct Pay - Arrange payments yourselves (£20 setup fee only)
Basic Rate
Weekly Maintenance
£82/week
Monthly£357
Annual£4,279
How This Was Calculated
Gross Weekly Income£600
Rate BandBasic Rate
Base Weekly Amount£96.00
Shared Care Reduction (One-seventh (14%))-£13.71
Final Weekly Maintenance£82.29
CMS Rate Bands
Below £7Nil Rate£0
£7-100Flat Rate£7/week
£100-200Reduced RateGraduated
£200-800Basic Rate12-19%
£800-3000Basic Plus9-15%
Estimate Only
This calculator provides an estimate based on the CMS formula. Actual maintenance may differ based on individual circumstances. For an official calculation, contact the Child Maintenance Service.
Frequently Asked Questions
How is child maintenance calculated in the UK?
What are the five CMS rate bands?
How does shared care affect maintenance?
What is the difference between Direct Pay and Collect & Pay?
What income is included in the calculation?
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