The 20% Down Payment Myth: Finding Your Best Number

One of the most common things I hear from buyers is:

“I’m still saving because I don’t have 20% down yet.”

That 20% number has become so deeply connected to homebuying that many people assume it is the amount they need before they can even start looking.

In reality, some buyers may qualify for mortgage options requiring much less.

But here is the part that matters even more:

The down payment percentage is only one number in the decision.

Before deciding how much to put down, I want buyers to understand three numbers:

1. The down payment options they actually qualify for

2. Their estimated total cash needed at closing

3. The amount of savings they want left after closing

Those three numbers together can give you a much clearer picture of what you can comfortably afford. To see which numbers apply to your situation, start an application and we can run the numbers together.

Number 1: Find the Down Payment Options You Actually Qualify For

You may not need 20% down.

Depending on the loan program, your finances, and the property, you may qualify for a much smaller down payment.

Let’s use a $400,000 home as an example.

A 3% down payment would be:

$12,000

A 3.5% down payment would be:

$14,000

A 5% down payment would be:

$20,000

A 20% down payment would be:

$80,000

That is a huge difference.

Some conventional mortgage programs may allow qualified buyers to put as little as 3% down.

FHA financing may allow qualified buyers to put 3.5% down.

Other buyers may decide that 5%, 10%, 15%, or 20% makes more sense for their situation.

The important word here is qualified.

The minimum available to one buyer may not be available to another.

Eligibility can depend on things such as your income, credit profile, loan program, occupancy, property type, and other underwriting requirements.

This is why I would not start your home search by randomly choosing a down payment percentage.

Start by finding out which options are actually available to you — a quick way to do that is to begin your mortgage application so we can review your qualifications.

Then compare them.

Number 2: Calculate Your Estimated Cash Due at Closing

This is where many first time buyers get surprised.

If you are putting $20,000 down, that does not necessarily mean you only need $20,000 to close.

Your down payment is only one part of the transaction.

You may also have closing costs and prepaid expenses.

At the same time, you may have already paid earnest money or negotiated a seller credit that reduces the amount you need to bring to closing.

Here is a simplified example on a $400,000 purchase with 5% down.

Down payment: $20,000

Estimated closing costs and prepaid items: $10,000

That brings the estimated total to:

$30,000

Now imagine you already paid:

$5,000 in earnest money

And negotiated:

$6,000 in eligible seller credits

Your simplified estimate would look like this:

$20,000 down payment
Plus $10,000 in closing costs and prepaids
Less $5,000 already paid
Less $6,000 seller credit

Estimated cash due at closing: $19,000

That is a much more useful number than simply saying:

“I’m putting 5% down.”

Your actual costs will depend on the loan, property, taxes, insurance, closing date, negotiated credits, and other factors.

But this calculation helps you understand why the down payment alone does not tell you how much cash you actually need. Your loan officer can put together an itemized estimate for you — start an application to get one.

Number 3: Decide How Much Savings You Want Left After Closing

This may be the most overlooked number of all.

Buying a home should not require draining every dollar from your bank account.

You still have a life after closing.

There may be moving expenses.

Furniture.

Repairs.

Appliances.

Unexpected maintenance.

And regular emergencies that have nothing to do with the house.

That is why I encourage buyers to establish a savings floor before deciding how much cash to put into the purchase.

Your savings floor is simply the amount you want to keep untouched after closing.

For example, imagine your estimated full housing payment will be approximately:

$2,800 per month

You decide you want at least three months of housing payments available:

$8,400

You also want approximately:

$3,000

available for moving expenses and early repairs.

That gives you a personal reserve floor of:

$11,400

Now you have a much more meaningful target.

Instead of asking:

“What is the biggest down payment I can make?”

You can ask:

“How much can I comfortably put down while still keeping at least $11,400 in savings?”

Those are very different questions.

Now Put All Three Numbers Together

This is where the mortgage strategy becomes much clearer.

Imagine a buyer has:

$35,000 saved

They want to keep:

$11,400 untouched

Using the same hypothetical closing costs, earnest money, and seller credits from the previous example, let’s compare two potential down payment options.

Option 1: 3% Down

Down payment on a $400,000 home:

$12,000

Estimated cash due after the other costs, deposit, and seller credit in our example:

Approximately $11,000

That would leave approximately:

$24,000 in savings

The buyer comfortably stays above the $11,400 reserve floor.

Option 2: 5% Down

Down payment:

$20,000

Estimated cash due:

Approximately $19,000

Savings remaining:

Approximately $16,000

The buyer still remains above the desired $11,400 reserve floor.

So which option is better?

You cannot answer that question from the down payment alone.

Now you need to compare the mortgage itself.

Compare the Full Monthly Payment

A smaller down payment usually means borrowing more money.

Depending on the loan, it may also affect mortgage insurance and other costs.

A larger down payment may reduce the monthly payment.

But putting more money down also means keeping less cash available after closing.

That is the tradeoff.

For the same $400,000 home, I would want the buyer to see both scenarios side by side.

For each option, compare:

The principal and interest payment

Property taxes

Homeowners insurance

Mortgage insurance, if applicable

HOA dues, if applicable

Estimated cash required at closing

Estimated savings remaining after closing

Total cost of the loan

Now you are making a decision with the full picture.

Putting More Down Is Not Automatically Better

There is a tendency to assume:

More down payment equals a smarter financial decision.

Sometimes it does.

Sometimes it does not.

Imagine two buyers purchasing the same home.

One puts almost every dollar they have into the down payment because they want the lowest possible mortgage balance.

The other chooses a slightly smaller down payment and keeps a healthy cash reserve.

Three months later, the furnace stops working.

Which buyer is in the stronger financial position?

The answer may not be the buyer who made the biggest down payment.

Homeownership comes with expenses that renters may not have been responsible for before.

Keeping cash available can be part of a smart homebuying strategy.

Why 20% Still Comes Up So Often

There are legitimate reasons buyers consider putting 20% down.

For some conventional loans, reaching 20% equity may eliminate the requirement for private mortgage insurance.

A larger down payment can also reduce the amount you borrow and potentially lower your monthly principal and interest payment.

But avoiding mortgage insurance should not automatically be the only goal.

Imagine delaying your purchase for several years simply because you believe you must reach 20%.

During that time, home prices, interest rates, rent, income, and your personal circumstances can all change.

There is no universal percentage that is right for every buyer.

The better question is:

Which down payment gives me the right balance between my monthly payment, cash required at closing, and savings after closing?

Ask Your Mortgage Lender to Show You More Than One Option

Before deciding how much to put down, ask your mortgage broker to model at least two scenarios at the same purchase price — or start an application and I can pull those scenarios for you.

For example:

3% down versus 5% down

5% down versus 10% down

10% down versus 20% down

For each option, ask to see:

The estimated full monthly housing payment

Include principal, interest, taxes, homeowners insurance, mortgage insurance, and HOA dues when applicable.

The estimated cash required at closing

Not just the down payment.

The estimated savings you would have left

Because the amount remaining after closing matters too.

Then choose the structure that keeps the payment comfortable without unnecessarily draining your reserves.

The Goal Is Not to Put Down the Most Money

The goal is also not to put down the least.

The goal is to structure the purchase so the numbers work together.

Your down payment should make sense.

Your monthly payment should feel manageable.

Your closing costs should be understood.

And you should still feel financially comfortable after you get the keys.

If you are thinking about buying a home in Indiana, I can help you compare different down payment scenarios before you start making offers — simply start your mortgage application here.

Sometimes seeing 3%, 5%, and 20% side by side makes the decision much easier. Let's find the number that works for you.

Jon Knight

Your Trusted Mortgage Lender in Carmel, Indiana