Home  ›  Resources  ›  Custody Timeshare Calculator

Custody Timeshare Calculator

Estimate each parent's percentage of parenting time from your actual schedule — the timeshare figure California's guideline child support formula relies on.

Why Timeshare Percentage Matters

California's guideline child support formula (used in DissoMaster and similar calculators) relies heavily on each parent's percentage of overnight parenting time. This tool walks through your actual schedule — whether it's a standard rotation like week-on/week-off or 2-2-5-5, or a custom pattern you build day by day — and estimates each parent's overnight percentage and annual overnight count.

This is an estimate based on overnights, the standard measure used by California guideline calculators. It doesn't capture daytime-only visits or holiday/summer schedule variations, so for an exact figure to use in a filing, build out the custom schedule option or have a document preparer review it.

Frequently Asked Questions

What counts as an overnight for this calculator?

An overnight is any night the child sleeps at that parent's home — the standard measure California's guideline child support formula uses for parenting time, regardless of daytime visitation that doesn't include an overnight stay.

Does this replace a custody agreement or court order?

No. This tool estimates a timeshare percentage from a schedule you describe; it doesn't create, modify, or file anything. If you need to establish, modify, or formalize a custody schedule, we prepare those documents separately.

How accurate is the "preset pattern" option versus "Custom"?

Preset patterns (week-on/week-off, 2-2-3, etc.) give a quick estimate assuming the pattern is followed exactly. If your actual schedule varies — different holiday time, an extra weeknight some weeks — the Custom option, where you build out an actual two-week calendar, gives a more accurate percentage.

Do you help with child custody and support paperwork?

Yes. We prepare child custody and support documents — including modifications — for a flat $500. As Legal Document Assistants, we prepare the paperwork based on what you tell us; we don't recommend a particular custody arrangement.

Ready to move forward?

Once you have your timeshare percentage, we prepare child custody and support paperwork — including modifications — for a flat $500.

See Child Custody & Support Documents →
Notice

Los Angeles Paralegals is a document preparation service — not a law firm. We do not provide legal advice, legal representation, or legal counsel of any kind. All documents are prepared based on information you provide. We strongly recommend consulting a licensed California attorney for advice specific to your circumstances.