CSA Calculator
365-Day Parenting Calendar Planner 2026 CMS 2012 Reg 46 • Annualized Day & Night Schedule Scheme: Annualized 365-Day Schedule

Child Maintenance Calculator Days Per Year

Plan your 365-day annual parenting schedule and calculate statutory child maintenance shared care tier thresholds.

Aggregates term-time weekends, midweek contact, school holiday blocks, and bank holidays to establish your exact annual tier entitlement.

365-Day Annual Calendar Planner

Annual Days & Nights Parenting Schedule Calculator

Build your annual 365-day contact schedule to reach the next statutory discount tier

365-Day Planner

Alt weekends = 52 nights

1 night / fortnight = 26 nights

Half of 13 holiday weeks

£

Weekly assessable earnings

Total Annual Nights
104 nights
28.5% of the year
Statutory Tier Achieved
Tier 2: 2/7ths
28.57% Statutory Discount
Weekly Payment
£79.99
£346.62 / month
Next Tier Gap
52 nights to Tier 3 (156)
Target for parenting schedule
365-Day Schedule Matrix

Annual Calendar Breakdown: Weekends, Midweek & School Holidays

365 Breakdown
Term-Time Weekends

Standard alternate weekend rotas (Friday 5pm to Sunday 6pm or Monday 8am) generate 52 to 78 nights per year.

School Holiday Entitlement

UK schools have approx. 13 weeks of holidays. Sharing holidays equally adds 42 to 45 nights annually.

Midweek Contact Nights

One overnight dinner stay every Wednesday or Thursday adds 39 to 52 nights, lifting parents into Tier 2 or 3.

Calculating Annual Parenting Days for Statutory Maintenance

Under the Child Support Act 1991, shared care is evaluated across an entire 52-week calendar year (365 days). Rather than relying on rough weekly estimates, statutory assessments require an accurate annualized audit of all overnight stays.

By aggregating weekend blocks, holiday periods, and teacher training days, parents can identify whether their current contact schedule falls just a few nights short of a higher discount tier.

How Holiday Blocks and Midweek Stays Aggregate into 365 Days

Many parents assume they only receive credit for term-time contact. However, school holiday provisions in Child Arrangements Orders typically award:

  • • Half of 6-week summer holiday: 21 nights
  • • Half of 2-week Christmas break: 7 nights
  • • Half of 2-week Easter break: 7 nights
  • • Three 1-week half-terms: 10 to 14 nights

Combined, school holidays contribute 45 to 49 overnight stays, which when added to 52 alternate weekend nights produces 97 to 101 nights—putting the paying parent on the threshold of Tier 2 (104 nights).

Recording Evidence: Calendars, Messages & Official Logbooks

To protect against CMS reassessments based on inaccurate receiving parent claims, paying parents should maintain a synchronized digital calendar documenting every overnight stay, school pick-up, and return.

If a dispute arises, providing an export of your calendar alongside WhatsApp or email confirmations allows CMS decision-makers to confirm your exact tier without delays.

Legal Clarifications

Frequently Asked Questions: Child Maintenance Calculator Days Per Year

Authoritative answers based on current statutory rules and legal precedents

How does the CMS calculate days per year? ↓
The CMS calculates shared care on an annual basis over 52 weeks (365 nights), evaluating the total number of overnight stays completed or agreed in a court order or parenting plan.
Do bank holiday Mondays count as extra nights? ↓
Yes. If a weekend contact order extends to Monday morning or Monday evening, that Sunday night counts as an additional overnight stay.
What happens if a child stays 103 nights instead of 104? ↓
Under statutory law, 103 nights remains in Tier 1 (1/7th discount). Reaching 104 nights is required to unlock Tier 2 (2/7ths discount), making an extra night worth hundreds of pounds in savings.
How do teacher training days (INSET days) affect the count? ↓
If an INSET day extends your weekend contact by an overnight stay on Thursday or Sunday, that extra night adds directly to your annual total.
Can sick days or emergency stays be counted? ↓
Yes, provided the child stayed overnight in your care. Keep text messages confirming the emergency overnight care to prove the night if challenged.
How do I submit an annual calendar to the CMS? ↓
You can upload your calendar or parenting agreement through your CMS Online Portal account or submit it during your Annual Review window.

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