Upfront costs
Buying starts with more than the down payment. Buyer closing costs can include lender fees, title and settlement charges, recording fees, prepaid interest, escrow funding, inspections, and other local items. The exact mix varies by transaction and location. In the calculator, buying closing costs are entered as a percentage of the home price so you can replace the planning estimate with a lender or settlement estimate later.
Recurring ownership costs
Recurring costs should be compared with recurring rent. Principal repayment is not an expense in the same way as interest, but it is a cash outflow that affects monthly affordability. The model tracks principal separately so it can become equity in the buyer's net worth.
| Category | How it enters the comparison |
|---|---|
| Mortgage principal and interest | Principal reduces the loan balance; interest is a financing cost. |
| Property tax | Annual tax rate applied to projected value, with a separate growth assumption. |
| Homeowners insurance | Annual premium divided into monthly cash flow and grown over time. |
| Maintenance | Planning allowance based on a percentage of projected home value. |
| HOA dues | Monthly fee with its own annual increase assumption. |
| PMI | Estimated while the modeled loan-to-value remains above the cancellation threshold. |
Maintenance is a reserve, not a forecast
A percentage assumption is useful for a first pass, but real repairs arrive unevenly. A roof, HVAC system, plumbing issue, appliance replacement, or exterior project can create a large one-time bill. Use the percentage as a reserve target, then check it against the home's age, condition, systems, climate, and association responsibilities.
Selling costs change short horizons
When the owner sells, the home may be worth more, but the transaction is not free. The calculator applies an estimated selling-cost percentage to the projected sale value. This is especially important for a one- to five-year horizon: even if the property appreciates, selling costs and upfront costs can absorb much of the gain.
What to collect before using a local estimate
For a stronger estimate, gather a realistic mortgage quote, a property-tax bill or local effective rate, insurance quotes, HOA documents, recent comparable rents, likely maintenance needs, and a plausible selling-cost range. Keep the calculator's baseline for comparison, but record the source and date of each local assumption.
Continue to the rent vs buy calculator to see these costs alongside rent growth and investment opportunity cost.