## Use net income, stress the rate
Loan-to-income and Mortgage payment should use take-home, not offer-letter gross. Re-run payments +1–2% rate. If the budget only works at teaser rates, it does not work.
## Stack risk
A clean mortgage plus a quiet car loan plus BNPL is still a stack. List all fixed payments with Debt comparison. Approval is not the same as wisdom — especially under model us-federal-fica assumptions used for education on this site.
---
Note: Educational content from Calcly United States. Official sources (IRS / SSA — educational federal model; state tax not fully modeled.) and licensed professionals take priority in United States.