Buying a Home: What You Need to Know

Buying a home is the largest financial transaction most people make in their lifetime, and the mortgage you choose will shape your budget for decades. Before you start touring homes, run the numbers. Understanding your true monthly cost — including property taxes, insurance, and PMI — prevents the common trap of buying a home that fits the mortgage payment but stretches the total housing budget too thin.

The most important number lenders look at is your debt-to-income ratio (DTI) — your total monthly debt payments divided by your gross monthly income. Most conventional loans require a DTI below 43%, with the best rates reserved for borrowers under 36%. Use our affordability calculator to find your maximum qualifying loan amount before you start shopping.

Not sure whether to rent or buy? The answer depends heavily on how long you plan to stay. Due to closing costs (typically 2–5% of the purchase price), buying only makes financial sense if you stay long enough for appreciation and equity-building to outweigh those upfront costs — usually 4–7 years depending on the market. Our Rent vs. Buy Calculator runs the full comparison for your specific situation.