Inputs you need for Alimony Child Support in New Hampshire
5 min read
Published April 15, 2026 • By DocketMath Team
Inputs you will need
Run this scenario in DocketMath using the Alimony Child Support calculator.
If you’re trying to estimate alimony and child support in New Hampshire using DocketMath, the calculator needs consistent, jurisdiction-aware inputs. This section lists what to gather before you click Run it.
Because this page is focused on inputs (not legal conclusions), treat the calculator as an estimate tool—not a determination of what a court will order.
Alimony inputs (typically required)
- ☐ Both parties’ gross income (annual or monthly—use the same time basis for both)
- ☐ Income frequency (e.g., monthly income vs. annual income)
- ☐ Any documented additional income (if you have it, such as bonuses or overtime)
- ☐ Work-related income adjustments you plan to apply consistently across the inputs
- ☐ Child-related expense overlap (if your situation includes shared costs that you want reflected in the model)
Child support inputs (typically required)
- ☐ Number of children for the order (for each child involved)
- ☐ Health insurance cost for the child(ren), if known
- ☐ Childcare expenses, if known
- ☐ Parenting time / custody structure (the calculator will translate this into an allocation)
- ☐ Both parents’ gross incomes (again, same frequency as above)
Timing / paperwork inputs (often overlooked, but crucial for accuracy)
- ☐ Effective date or timeframe you want the estimate to cover
- ☐ Whether you’re modeling current circumstances or a future change
- ☐ Any known supportable expenses you want included (health insurance, childcare)
A note on enforcement timelines (why “timing” matters)
New Hampshire’s general statute of limitations for many civil actions is 3 years under RSA 508:4. This is best understood as a general baseline period, not a claim-specific promise about any particular support enforcement dispute.
For reference, RSA 508:4 is described here: https://www.thelaw.com/law/new-hampshire-statute-of-limitations-civil-actions.391/?utm_source=openai
Warning: Don’t rely on a general statute of limitations to predict outcomes for support-related enforcement without matching your facts to the correct legal theory. The “3 years” rule is a default/general period, not a guaranteed answer for every support timing question.
Where to find each input
You can usually pull the required numbers from the documents you already have. Below are practical “where to look” sources—organized by input type.
Most inputs live in the case file, contracts, or docket entries. Dates usually come from the triggering event notice; rates and caps come from governing documents or statute; and amounts come from the ledger or judgment. Record the source for each value so the run is reproducible.
Income (gross income for each parent)
Look for:
- ☐ Pay stubs (most recent 4–8 pay periods)
- ☐ W-2 forms (most recent tax year, if you need a baseline)
- ☐ Recent tax returns (business income info, if relevant)
- ☐ Employer statements for bonuses, commissions, or regular overtime
Tip: Use gross income consistently. If you switch between gross and net amounts, your estimate can change dramatically.
Parenting time / custody structure
Look for:
- ☐ The signed custody/support order you’re updating
- ☐ Parenting plan schedules (week-on/week-off, alternating weekends, holiday splits)
- ☐ A written agreement reflecting the real schedule
If your parenting time is not fixed, document the pattern you can defend (for example, “alternating weeks,” “two overnights per week,” etc.).
Child-related expenses (if included by you in the model)
Look for:
- ☐ Health insurance premium statements
- ☐ Invoices/receipts for childcare
- ☐ School fees or childcare-related costs (if they’re part of your expense category)
Timing (effective date / timeframe)
Look for:
- ☐ Filing dates and order start dates in court paperwork
- ☐ Agreement effective dates in settlement documents
Why timing matters for inputs: Even if the formula is the same, your starting point changes which months’ income and expenses are modeled.
Run it
Once you’ve assembled the inputs, use DocketMath to generate an estimate at: /tools/alimony-child-support
Enter the inputs in DocketMath and run the Alimony Child Support calculation to generate a clean breakdown: Run the calculator.
Step-by-step checklist
- ☐ Open DocketMath: /tools/alimony-child-support
- ☐ Enter Parent A gross income (with the correct frequency)
- ☐ Enter Parent B gross income (matching the same frequency)
- ☐ Enter the number of children
- ☐ Enter parenting time / custody structure
- ☐ Add optional expense inputs if you’re including them (health insurance, childcare)
- ☐ Set the timeframe you want the estimate to represent
- ☐ Click Calculate / Run
What to expect from the outputs
DocketMath results can change when you modify inputs. Track the biggest drivers:
- Income changes
- If Parent A’s gross income increases (or Parent B’s decreases), the estimate often shifts accordingly because the model uses both parents’ ability to pay.
- Parenting time changes
- Adjusting custody time can change the support calculation because the calculator allocates the child’s time based on the household structure.
- Expense inputs (health insurance / childcare)
- Adding or removing these inputs can raise or lower the resulting child support estimate depending on how the tool applies those categories.
Pitfall: If you enter annual income in one field and monthly income in another, the results can be wildly off even though everything “looks filled in.” Use one time basis across all income inputs.
Quick sanity check before you treat results as “final”
Use this short checklist after running the calculator:
- ☐ Gross income numbers are consistent in frequency (monthly vs. annual)
- ☐ Number of children matches the case facts you’re modeling
- ☐ Parenting time reflects a consistent pattern (not a one-off week)
- ☐ Expense inputs are either fully included or fully excluded—avoid mixing partial categories without intent