For generations, buyers have heard the same advice: save 20% before you even think about buying a house. It sounds like a firm lending rule, but it is not. A 20% down payment can be financially useful, especially on a conventional mortgage, yet it is not a universal requirement. The better question is what putting less than 20% changes about your loan, monthly cost, cash reserves, and timing.
The 20 percent down payment myth matters because it can keep otherwise qualified buyers on the sidelines for years. Waiting may still be the right choice, but it should be a deliberate financial decision rather than a response to a rule that does not actually exist.
Why 20% Became the Number Everyone Remembers
The 20% figure is closely tied to conventional mortgage insurance. On many conventional loans, borrowers who put down less than 20% are required to carry private mortgage insurance, or PMI. PMI protects the lender if the borrower defaults; it does not protect the homeowner. Because reaching 20% down can help a buyer avoid PMI from the start, the number gradually became shorthand for the “proper” down payment.
That shorthand causes the confusion. Avoiding PMI is a potential benefit of 20% down, not proof that every mortgage requires it. Freddie Mac notes that some conventional programs permit down payments as low as 3%. Eligible borrowers may also find government-backed options with different structures. VA loans can allow qualified borrowers to buy without a down payment and do not require monthly mortgage insurance, although a funding fee may apply. USDA guaranteed loans can offer 100% financing for eligible borrowers and properties, but they use guarantee fees rather than conventional PMI.
What Putting 20% Down Actually Buys You
A larger down payment reduces the amount you borrow. That usually means a lower principal-and-interest payment, less interest over the life of the loan, and more equity on day one. On a conventional mortgage, putting 20% down also commonly removes the need for borrower-paid PMI at closing.
Those are real advantages, but they have a cash cost. A buyer who empties savings to reach 20% may have less money for closing costs, moving, repairs, furnishings, an emergency fund, or an income interruption. A strong down payment should be judged alongside the rest of the household balance sheet.
A Practical Example
Consider a $400,000 home. A 20% down payment is $80,000, while 10% is $40,000. The 10% option leaves $40,000 more in cash but creates a larger mortgage balance and may add PMI on a conventional loan. Whether that trade-off is sensible depends on the interest rate, PMI quote, closing costs, monthly budget, emergency savings, and expected time in the home.
Ask a lender to show the same purchase price with several down-payment amounts. Compare the monthly payment, cash needed to close, mortgage insurance, rate, lender fees, and total cost over the first few years. That turns an abstract rule into a decision based on your own numbers.
PMI Is a Cost, Not Necessarily a Permanent One
Some buyers treat PMI as a charge that must be avoided at any cost. It is an added expense, but on many conventional mortgages it does not last forever. Under federal rules described by the Consumer Financial Protection Bureau, borrowers generally can request PMI cancellation when the scheduled principal balance reaches 80% of the home’s original value, provided required conditions are met. In general, automatic termination occurs when the scheduled balance reaches 78% of the original value and the borrower is current.
Government-backed loans work differently. FHA loans use mortgage insurance premiums rather than conventional PMI. For many newer FHA loans with an initial loan-to-value ratio above 90%, annual mortgage insurance can remain for the loan term; at or below 90% LTV, the annual MIP period is generally 11 years. That is why buyers should never assume the same cancellation rules apply to every mortgage type.
When Waiting for 20% Can Make Sense
Waiting can be sensible if a larger down payment would meaningfully improve affordability, reduce a strained debt-to-income ratio, create a payment you can comfortably handle, or let you buy without draining emergency reserves.
It may also make sense when a major financial improvement is close, such as paying off high-interest debt, receiving a known bonus, or improving credit enough to qualify for materially better terms. The goal is not to rush into homeownership. It is to separate financial readiness from an arbitrary percentage.
When Waiting Can Cost More Than It Saves
The opposite can happen too. A buyer may spend years trying to move from 10% to 20% while rent continues, home prices rise, or mortgage rates move against them. None of those outcomes is guaranteed, which is exactly the point: waiting carries risks as well as benefits.
Suppose a household can comfortably afford the payment with 10% down, keeps a solid emergency fund after closing, and receives a reasonable PMI quote. If reaching 20% would require another three years of saving, the buyer should compare the cost of PMI and the larger loan with the cost and uncertainty of waiting. The answer may still be “wait,” but it should come from a side-by-side calculation.
A Better Down-Payment Decision Framework
Focus on four numbers: cash left after closing, total monthly housing payment, mortgage insurance or program fees, and the cost difference over the period you realistically expect to own the home. Compare multiple lenders too, because rates, PMI pricing, credits, and fees can vary for the same borrower.
Useful related topics for a broader buying plan include down payment assistance programs, closing costs for homebuyers, and how mortgage preapproval works. Together, they put the down payment in context instead of treating it as the only hurdle between renting and owning.
Frequently Asked Questions
Is 20 percent down required to buy a house?
No. Many mortgage programs allow qualified borrowers to purchase with less than 20% down. The loan type, borrower qualifications, property, and lender guidelines determine what is available.
Do I always pay PMI if I put down less than 20%?
No. PMI applies to many conventional loans below 20% down. FHA, VA, and USDA loans use different insurance or guarantee structures, and VA loans do not require monthly mortgage insurance.
Is it smarter to put 20% down just to avoid PMI?
Sometimes, but not automatically. Compare the PMI cost with the value of keeping cash available, your larger loan balance, emergency reserves, and the financial effect of delaying the purchase.
Can conventional PMI be removed later?
Often, yes. Federal rules provide cancellation and automatic-termination protections for many conventional mortgages when specific balance and payment conditions are met. Your loan documents and servicer can confirm the exact requirements.
The Bottom Line
Twenty percent down is a useful benchmark, not a universal gatekeeper. It can reduce borrowing costs and help conventional buyers avoid PMI, but a smaller down payment may still produce a sound, affordable purchase when the rest of the finances are strong. The best choice balances monthly affordability, cash reserves, loan costs, and timing instead of chasing 20% simply because buyers have long been told they had to.