Solutions → Packs
The catalog, cut the way you buy.
The solutions are the shape of what you ship — a calculator, a planning experience, a managed household. Packs are the domain inside it. Every pack carries the same six artifacts per model, ships behind the same API, and works with all three solutions — pick your domain, then ship it in whichever shape your product needs.
Tax & equity comp
10 LIVEThe hardest math in the catalog: AMT on an ISO exercise to the share, QSBS §1202 across all four regimes, 83(b) elected vs. not, wash sales, and the retirement-income cliff stack. Federal, planning-grade, exclusions published.
For: equity-comp & tax platforms, startup-employee tools, advisors with founder clients
Retirement & drawdown
9 LIVERMDs, Roth conversions and the backdoor, Social Security timing, 401(k) match math, FIRE — plus the household engine's coordinated drawdown strategies when one answer isn't enough.
For: retirement platforms, 401(k) providers, advisory firms
Loans, credit & housing
14 LIVEMortgages end to end — points break-even, PMI removal, ARM vs. fixed, biweekly, refinance — plus auto loans, loan comparison, student loans, payoff strategies, and credit-card minimum-payment math.
For: lenders, credit unions, personal-finance apps, real-estate platforms
Startup & business
6 LIVEBurn and runway, SAFE dilution checked against Y Combinator's own worked examples, option-pool math, equipment lease vs. buy, SBA loan cost from the statute and the current fee notice.
For: founder-facing fintech, banking-for-startups, cap-table tools
Longevity, insurance & care
6 LIVELongevity horizons on SSA life tables, annuity payouts, life-insurance need, long-term-care and eldercare cost math — and the longevity-aware Monte Carlo that carries them into a whole-household plan.
For: insurers, annuity platforms, retirement advisors
Life, household & education
12 LIVERelocation, a child, a wedding, a sabbatical, one income, a windfall, a renovation — plus 529 savings and private school. The everyday decisions a consumer-facing product has to answer.
For: personal-finance apps, banks, employers' financial-wellness programs
Estate & legacy
PLANNEDFederal estate and gift exposure is live today (in the longevity & care family); growing toward step-up vs. gift-now basis math, inherited-IRA SECURE Act distributions, QCDs, 529 superfunding, and survivor & legacy household scenarios. Wills, trusts, and probate are published exclusions — computation, never legal advice.
For: advisors and institutions serving households across generations · follow on the roadmap →
Any pack, any solution. A pack isn’t a SKU — every paid plan includes the whole catalog. Packs exist so you can find your domain fast and see it whole: embed its calculators today, wire its models into planning next quarter, and let the household engine coordinate them for managed clients — without ever re-integrating.