TOPIC HUB · MORTGAGE
Mortgage hub
A job workflow for housing: affordability ceiling first, full PITI stack second, amortization third, then rent-versus-buy or refinance break-even.
5 calculators · educational housing sketches, not lending or real estate advice
Framing: ordered mortgage playbook (ceiling → PITI → schedule → rent/refi), not a loans APR shopping path and not an investing contribution path.
The job this hub solves
Housing math fails when principal and interest alone look affordable. Taxes, insurance, HOA, and PMI sit in the monthly stack, DTI caps approval, and refinance “savings” vanish if you reset the term or move before break-even. This hub builds the full payment, then stress-tests the decision.
Playbook
Four steps for housing only. Do not skip taxes and insurance when the P&I quote looks fine.
- 01
Set an affordability ceiling
Start from income and existing debts. House affordability and DTI language keep you from anchoring on a listing payment that ignores the rest of the budget.
Open house affordability - 02
Build the full monthly stack (PITI)
Add taxes, insurance, and PMI to principal and interest. The mortgage calculator is where the quote becomes a housing bill, not a loan payment alone.
Open mortgage calculator - 03
Read the schedule and term tradeoff
Amortization shows how much interest you pay early and what a 15 vs 30 year choice costs. Extra principal scenarios matter before you lock the term.
Open amortization - 04
Decide rent, buy, or refinance
If you are choosing tenure, run rent vs buy on your horizon. If you already own, use refinance break-even months and watch for term-reset traps before you sign.
Open rent vs buy
Rate stress (do this once)
Re-run the same loan at about +1% rate and ask whether the payment still fits. Listings that only work at today’s quote often fail under a small rate miss or an escrow re-analysis.
Stress the mortgage paymentTools for this job
Payment, affordability, schedule, and tenure choice in one list.
- MortgageMonthly payment with taxes, insurance, and PMI-aware housing stack.
- House affordabilityTop-down ceiling from income and debt constraints.
- AmortizationPrincipal versus interest over time; early payoff sketches.
- Rent vs buyHorizon and opportunity-cost sanity check for tenure choice.
- PaymentQuick payment comparisons across term and rate pairs.
Guides
PITI, PMI, refinance break-even, and rent-versus-buy frameworks.
- PITI + DTI affordability guideThe math that keeps a listing from making you house-poor.
- House affordability frameworkPITI plus stress test when assumptions are imperfect.
- Mortgage calculator: first-time buyer guideHow to read results and avoid expensive first-loan mistakes.
- PMI explained (and removal)How PMI changes the monthly stack and when removal is realistic.
- Refinance break-evenBreak-even months, stay horizon, and term-reset traps.
- Rent vs buy frameworkBase, move, and rate-shock scenarios that matter.
Glossary anchors
One caution
These tools are educational housing sketches. They do not underwrite a loan, lock a rate, or replace a Loan Estimate or Closing Disclosure. Confirm taxes, insurance, HOA, and PMI with your lender and local assessor before you commit.