Buyer planning tool
California mortgage payment calculator
Estimate your mortgage payment and a fuller ownership budget, including HOA dues, mortgage insurance, Mello-Roos, utilities, and maintenance. Enter property-specific figures to compare homes before you tour.
Estimate your monthly ownership budget
Starting figures are illustrative, not current rate quotes or local averages. Optional costs start at zero; enter each applicable cost for a fuller budget. Include assessments here only if they are not already in your tax estimate.
Use the full monthly number.
Purchase price alone does not show whether a property fits. Compare principal and interest together with taxes, insurance, association dues, and property-specific assessments.
Check the actual tax bill.
Two similarly priced homes can carry different assessments. Review the complete tax bill and ask how reassessment after purchase may affect the amount.
Keep cash beyond closing.
A down payment is only one upfront need. Discuss closing costs and reserves with your lender, and maintain a realistic budget for maintenance after possession.
How this ownership budget is calculated
The loan amount is the purchase price minus your down payment. Principal and interest use a fixed-rate amortization formula over the term you enter. Annual property taxes, insurance, and assessments are divided by 12; HOA dues and the other monthly costs are then added. Utilities and a maintenance reserve are shown separately from the housing payment.
For example, adding $2,400 in annual assessments, $250 in monthly utilities, and a $400 monthly maintenance reserve adds $850 to the monthly budget. These are illustrative inputs, not Southern California averages. Do not add an assessment twice if it is already included in your tax estimate.
Use a lender quote for mortgage insurance, an insurance quote for the property, the tax bill for assessments, and HOA documents for dues. Check which utilities the HOA covers. This calculator does not predict future rate changes, tax changes, special assessments, or repair costs.
Explore the cost transparency hub for cash-to-close planning and city cost comparisons.
Two hypothetical homes
Can the lower-priced home cost more each month?
In this example, yes. Home A costs $25,000 less to buy but has higher HOA dues and assessments. These are fictional homes, not local listings or market averages. Both use an illustrative 30-year fixed loan at 6.5%, 20% down, a 1.2% annual property-tax assumption excluding separately listed assessments, $1,800 annual insurance, and no mortgage insurance.
| Input or cost | Home A | Home B |
|---|---|---|
| Purchase price | $650,000 | $675,000 |
| Down payment (20%) | $130,000 | $135,000 |
| Monthly principal and interest | $3,287 | $3,413 |
| Monthly property tax assumption | $650 | $675 |
| Monthly homeowners insurance | $150 | $150 |
| Monthly HOA dues | $500 | $250 |
| Annual assessments, divided by 12 | $200 | $0 |
| Monthly utilities | $200 | $200 |
| Monthly maintenance reserve | $150 | $150 |
| Total monthly budget | $5,137 | $4,838 |
Home A’s budget is about $299 more per month under these assumptions. Home B needs $5,000 more for the down payment; other upfront costs are not shown. The comparison does not predict appreciation, future assessments, or repairs.
Enter each scenario in the calculator above, using your own quotes and documents. Ask which costs your lender’s payment estimate includes and which you must budget separately. See the CFPB Closing Disclosure explainer for payment and closing-cost categories.
Estimate the separate cash needed at closingHelpful answers
Mortgage payment calculator questions
What does this mortgage payment calculator include?
It estimates principal and interest, property taxes, homeowners insurance, HOA dues, mortgage insurance, annual assessments divided by 12, utilities, and a monthly maintenance reserve using your inputs. Optional costs start at zero and must be entered. Closing costs and supplemental tax bills are separate.
How should I estimate California property taxes?
Use the expected tax rate for the specific property and include any special assessments separately when reviewing the actual tax bill. California property taxes vary by location and can include voter-approved bonds or community facilities district assessments.
Does a 20% down payment eliminate every extra cost?
No. A larger down payment may affect mortgage insurance and loan terms, but taxes, insurance, HOA dues, closing costs, maintenance, and possible district assessments still apply.
Is this the payment a lender will approve?
No. It is a planning estimate. A lender determines qualification, rate, loan terms, mortgage insurance, and required reserves after reviewing your application and the property.