What It Really Costs to Buy a Home

The price on the listing is only the start. This checklist walks through the cash you need on closing day, the money you should keep afterward, and the monthly cost that lenders and calculators often leave half-counted.

Last updated: October 12, 2026. The figures below were computed with this site's calculator code on that date. The percentages are illustrative rules of thumb, not quotes: your Loan Estimate has the real numbers.

The five buckets of cash

Almost everything you pay to buy a home falls into one of five buckets, and each is paid at a different time. Thinking in buckets makes it much harder to be surprised.

Worked example: a $350,000 home with 10% down

Suppose you buy a $350,000 house with 10% down, a $315,000 loan, a 6.5% rate and a 30-year term. The principal and interest payment is $1,991.01 a month. The table shows one plausible set of cash needs. Every line except the down payment is an assumption you should replace with your own quote.

ItemAmountAssumption
Down payment$35,00010% of $350,000
Closing costs$10,5003% of the price, an illustrative rule of thumb
Homeowner's insurance prepaid$1,50012 months at $1,500 a year
Moving and first repairs$3,5001% of the price, your choice
Reserve after closing$8,6583 months of the all-in payment below
Total cash$59,158about 17% of the price

The lesson is that a 10% down payment does not mean needing 10% of the price in savings. In this example you need roughly 17%, and the closing-day cash is $47,000 before the reserve. Buyers who only save the down payment are the ones who scramble at the closing table.

The true monthly cost

Lenders quote principal and interest, but you pay more every month. Using the same house, here is the all-in estimate: principal and interest of $1,991.01, property tax of about $320.83 (1.1% of the price a year), insurance of $125 ($1,500 a year) and mortgage insurance of about $157.50 (an illustrative 0.6% of the loan a year, because the down payment is under 20%). That adds up to about $2,594.34 a month. Add $291.67 a month for maintenance and repairs at 1% of the price a year and the real cost of owning is about $2,886.01 a month, about $895 more than the headline payment.

That gap is why a payment that looks affordable on a calculator can feel tight in practice. Two of the extra items, property tax and insurance, usually go up over time, so the payment on a fixed-rate loan stays flat only for principal and interest. The rent vs. buy calculator includes all of these items and lets you change each one.

A checklist to use before you make an offer

  1. Ask at least two or three lenders for a Loan Estimate on the same loan type, and compare the total of origination charges, the services you cannot shop for, and the cash to close.
  2. Get a real insurance quote and the actual property tax bill, not an estimate. Taxes can be reassessed after a sale.
  3. Check for HOA or condo fees and what they cover, and ask whether special assessments are planned.
  4. Find out whether the loan needs mortgage insurance. Read the PMI guide for when it ends.
  5. Add a monthly maintenance amount to your budget even if the home is new.
  6. Decide how many months of expenses you want left in the bank after closing, and treat that as part of the price of buying.
  7. Test your income against the new payment with the debt-to-income calculator, and read how lenders read DTI so you know which debts they will count.

Ways to lower the cash needed

Ask the seller for credits toward closing costs, compare lenders because origination charges differ, choose services you are allowed to shop for (such as title) carefully, and consider whether a lender credit that raises your rate is worth it. The CFPB's Loan Estimate guidance describes points (an up-front fee that lowers the rate) and lender credits (which offset closing costs, often for a higher rate) and suggests asking how a similar loan without either would change your rate and total cost. A lower down payment reduces cash up front but can add mortgage insurance and a bigger monthly payment, so it moves the cost rather than removing it.

Methodology and sources

The monthly figures use the standard fixed-payment formula, payment = loan × r ÷ (1 − (1 + r)−n), with r the monthly rate and n the number of months, and simple percentages of the price for tax, maintenance and the other lines. No market data is built in.

Sources: CFPB, Loan Estimate explainer (origination charges, shoppable services, prepaid homeowner's insurance, estimated cash to close, points and lender credits, mortgage insurance with under 20% down); CFPB, Buying a house (the four-step process). The 3% closing-cost, 1.1% tax, 1% maintenance and 0.6% mortgage insurance figures are this site's illustrative assumptions, not CFPB numbers.

Limitations and assumptions

This is general education and not financial or legal advice. Closing costs, taxes and insurance differ widely by state, county and lender, and some of them can be negotiated. Use the example to build your own list, then replace every assumption with a real quote before you commit to buy.

Related: the rent vs. buy calculator, the PMI guide, the loan calculator, the savings calculator, and all tools.