PREPARATION FUND
Build a shared preparation budget without pretending to estimate clinical costs
This calculator organizes amounts that partners enter for information gathering, benefits administration, household preparation, support reserve, and travel. It adds an explicit contingency, subtracts an existing fund, then allocates the remaining amount by income share subject to each person’s cap. It does not estimate medical treatment, pregnancy, childbirth, childcare, insurance coverage, or eligibility.
| Budget layer | Quantity or share | Rate or base | Amount | Unit |
|---|
Detailed calculation process
Formula, declared symbols, substitutions, intermediate results, and reconciliation
B = ΣCi; T = B(1+k); F = T − E; Ai = min(capA, F·IA/(IA+IB))
Five declared categories form base cost. Contingency is added, existing cash is subtracted, and the remainder is allocated by income share within hard contribution caps.
| Symbol | Meaning | Unit / default |
|---|---|---|
| Ci, B | entered category amounts and their base total | currency; B=$3,650 |
| k, T | contingency fraction and buffered plan | 0.12; currency |
| E, F | existing dedicated fund and amount still needing funding | $800; currency |
| IA, IB, capA, capB | allocation incomes and contribution limits | currency; caps $1,800/$1,400 |
- Add the entered categories to obtain B=$3,650.
- Convert 12% to k=0.12 and calculate contingency=$3,650×0.12=$438.
- Buffered plan T=$3,650+$438=$4,088.
- Amount to fund F=$4,088−$800=$3,288.
- Apply the declared allocation, then cap contributions at $1,800 and $1,400, for $3,200 funded by partners.
- Final reconciliation: $800 existing+$1,800+$1,400+$88 gap=$4,088 buffered plan.
How to build the budget
- Collect written quotes and plan documents.
- Separate information from household preparation.
- Define what the support reserve may cover.
- Add travel from a trip record.
- Choose contingency without counting items twice.
- Check caps before agreeing contributions.
Five foundations
Base category
Named amount before contingency.
Contingency
Explicit allowance for unpriced planning uncertainty.
Existing fund
Cash already dedicated to this plan.
Income share
One income divided by combined income.
Contribution cap
Maximum cash one partner declares available.
Deep dives
Quote dates
Provider and travel prices can expire; record the quote date and scope.
Coverage uncertainty
Benefits documents and insurer confirmations supersede assumed reimbursement.
Reserve separation
A planning reserve and an emergency fund serve different declared purposes and should not be silently merged.
Evidence
Retain provider estimates, benefit summaries, receipts, travel quotes, household lists, and a written contribution agreement. A zero gap means the declared plan is funded, not that future costs are known.
Limits
- No clinical cost or outcome prediction.
- No insurance coverage or eligibility decision.
- No tax, debt, inflation, or financing model.
- Income share is not a fairness rule.
- Category uncertainty remains user-supplied.
Glossary
- Base cost
- Sum before contingency.
- Buffered cost
- Base plus contingency.
- Unfunded amount
- Buffered cost not assigned to cash sources.
- Contribution cap
- Maximum declared partner amount.
- Support reserve
- Cash earmarked for non-clinical assistance.
- Coverage confirmation
- Insurer or employer record of benefits.
Cases
Employer-benefit review: a confirmed administration fee replaces an estimate and closes the gap.
Household preparation: caps expose an $88 gap, so purchases are staged without touching emergency savings.
Important note
For healthcare choices, speak with qualified providers; for coverage, contact the insurer or employer; for household financial strain, consider a qualified adviser.
Result interpretation
The funding gap is a plan constraint, not an automatic debt recommendation
The default plan needs $3,288 beyond the dedicated fund, while the two contribution caps supply $3,200. The remaining $88 must be resolved by changing scope, timing, verified funding, or the caps. It should not be hidden by assuming credit, reimbursement, or emergency savings.
Decision and sensitivity
Category evidence matters more than small allocation changes
Every additional $100 of verified base cost raises the buffered plan by $112 at the default contingency. Increasing either contribution cap affects the gap only until the $3,288 funding need is met. Review the largest uncertain category first, then decide whether the contingency still reflects the remaining unknowns.
Questions
Are medical bills predicted?
No. Categories are user-entered planning amounts, not medical cost estimates. Obtain actual benefit documents, provider estimates, and policy terms where applicable.
Why keep a contingency?
It makes unpriced administrative and household uncertainty visible. It is not evidence that a cost will occur or permission to omit known items.
Is income proportionality fair?
It is one arithmetic allocation, not a fairness judgment. Partners may choose another rule after considering debts, benefits, care work, and separate obligations.
What do contribution caps do?
They prevent calculated shares from exceeding declared cash limits. A cap converts an allocation difference into an explicit funding gap instead of silently overdrawing one partner.
Can the fund exceed the plan?
Use a separate reserve record; this model requires existing fund not to exceed the buffered plan. Keeping surplus reserves separate preserves the meaning of remaining-to-fund.
Should emergency savings be spent?
That is a household decision; CFPB describes emergency funds as reserves for unplanned expenses. Do not relabel emergency cash as available without an explicit decision.
Why are category amounts entered separately?
Separate categories reveal which estimate, quote, or assumption changed. A single lump sum makes later reconciliation and ownership difficult.
What if one contribution cap is zero?
That partner receives no calculated cash contribution under the cap, and the other cap plus existing fund determine the remaining gap. This does not assign non-cash responsibilities.
How should refunds or reimbursements be modeled?
Record only documented amounts and timing, preferably as a separate funding source. Do not reduce gross costs using an uncertain reimbursement.
When should the budget be recalculated?
Recalculate after a verified quote, benefit decision, contribution change, or category-scope change. Keep dated versions so forecast error is visible.