Estimate your monthly mortgage payment including principal, interest, property tax, insurance and PMI, plus the total interest over the loan.
Principal and interest are fixed for the loan. Property tax, insurance and PMI are estimates that change over time and are usually collected monthly into an escrow account. PMI typically drops off once you reach 20% equity.
The all-in figure adds principal and interest (the loan itself) to the monthly share of property tax, home insurance and PMI. Lenders often bundle the last three into an escrow account, so this reflects what actually leaves your bank each month.
Private mortgage insurance is usually required when your down payment is under 20%. It protects the lender, not you, and typically ends once you reach 20% equity, so set it to zero if it does not apply.
Over a long term like 30 years, interest compounds on a large balance for a long time. Shortening the term or paying extra toward principal can cut the total interest dramatically.