AtlasCalcsUtility Calculation Suite
2026-08-07 10 min

Down Payment Calculator

Calculate the upfront cash needed for a home purchase, the monthly payment with PMI, taxes, insurance, and HOA, plus points, extra payments, and a full amortization schedule.

Calculator

Home Price
$
Down Payment(%)
%
Interest Rate(%)
%
Loan Term(years)
years
Property Tax(/year)
/year
Home Insurance(/year)
/year
HOA Fee(/month)
/month
Points(%)
%
Extra Monthly
$
Summary:Down Payment: $50,000.00 (20.0%)Loan: $200,000.00
Results update live as you type

Results

Caution

Enter Valid Values

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Enter a home price, down payment percent, and valid loan term

Estimates use a fixed rate and standard monthly compounding. PMI pricing, insurance quotes, and tax bills are your inputs; closing costs beyond points are not included.

Formula

The down payment is the upfront cash for a home, computed as a percentage of the purchase price. The loan amount that remains is amortized with the annuity formula. When the down payment is under 20%, PMI is added monthly, and the true monthly cost layers in taxes, insurance, and HOA fees.

Down Payment = Price × D%; PMT = P × i / (1 − (1 + i)^−n)

Alternative Form

Total Upfront = Down Payment + Points Cost

Variables

SymbolNameUnitDescription
PriceHome priceUSDThe purchase price of the home
DDown payment %%Percent of the price paid upfront
PLoan amountUSDPrice minus the down payment, comprising the loan
iMonthly ratedecimal per monthAnnual interest rate divided by 12
nNumber of paymentsmonthsLoan term in years times 12
PointsDiscount points% of loanUpfront premium that buys a lower rate

Explanation

Every percent of down payment restructures the entire loan: higher down payment means a smaller principal, no PMI at 20%, and lower monthly payment. Points behave like a fee on the loan amount, adding cash at closing in exchange for a rate reduction over the life of the loan.

Derivation

Down payment = price × D/100, loan P = price − down payment. Monthly rate i = r/12, n = term × 12. PMT = P × i / (1 − (1 + i)^−n). Total Upfront = down payment + P × points%. Monthly Total = PMT + PMI + taxes/12 + insurance/12 + HOA.

Worked Examples

See how the calculator works with different scenarios.

Scenario

A $300,000 home with a 20% down payment at 6.5% over 30 years, $3,000/year taxes, $1,200/year insurance, no HOA.

Inputs

Home Price:$300,000
Down Payment:20% ($60,000)
Rate:6.5%
Taxes:$250/mo
Insurance:$100/mo

Calculation

Down payment = 300000 × 0.20 = $60,000 Loan = 300000 − 60000 = $240,000 i = 0.065/12 = 0.0054167 PMT = 240000 × 0.0054167 × 1.0054167^360 / (1.0054167^360 − 1) = $1,517.22 Total = 1517.22 + 0 + 250 + 100 = $1,867.22

Result

$60,000 down, $240,000 loan, $1,867.22 monthly total, no PMI

Interpretation

Twenty percent down removes PMI entirely. The 30-year schedule costs $306,199 of total interest on a $240,000 loan — the down payment is the single largest cash item, but it permanently reduces both the payment and the interest bill.

Understanding Your Result

Your Result: Enter Valid Values: ---

Typical range: Down payments of 20% eliminate PMI and are the standard benchmark. First-time buyers typically put 6-10% down, paying PMI. For a $300,000 home, a 20% plan costs about $60,000 + $1,900/month, while 5% costs about $15,000 + $2,050/month with PMI.

What This Means

The primary results are the down payment amount, the loan amount, the total upfront cash (including points), and the true monthly payment. Extra-payment mode adds the payoff time and interest saved versus the standard schedule.

Why It Matters

The down payment percentage is the lever with the most outsized effect: it drives the loan size, whether PMI exists, the rate tier you qualify for, and total cash flow for years. Knowing both the upfront number and the monthly reality before shopping prevents the most common first-time buyer mistakes.

Professional Interpretation

Lenders do the same math this calculator runs: loan capped at price minus down payment, monthly payment built from P&I plus escrow items, and PMI priced from the loan-to-value. The extra-payment schedule shows the prepayment power that many borrowers leave unused.

Points trade-off

Each point costs 1% of the loan amount at closing and typically lowers the rate by 0.25%. The calculator adds points to the upfront total so you can weigh the cash cost against the long-term payment savings.

PMI lifecycle

PMI auto-cancels at 78% LTV and can be removed on request at 80% LTV. With aggressive extra payments the schedule shortens, pulling the PMI threshold forward and saving even more.

Recommendations

  • •Put at least 20% down when the budget allows to skip PMI entirely
  • •Model 5%, 10%, and 20% scenarios side by side
  • •Compare total interest, not just the monthly payment
  • •Add an extra monthly payment if the cash flow allows — it shortens the loan
  • •Check the property tax and insurance history before setting your budget
  • •Recheck the numbers at every 0.25% rate change before you lock

Educational Content

Introduction

A down payment is the upfront portion of a payment that is often required to finalize the purchase of items that are typically more expensive, such as a home or a car. When purchasing a home, after a down payment is paid by the buyer, any remaining balance is amortized as a mortgage loan. The purchase price of a house equals the mortgage loan plus the down payment, and the down payment is typically expressed as a percentage of the purchase price.

Concept Explanation

Putting 20% or more down removes the Private Mortgage Insurance requirement, improves the rate tier, and starts you with visible home equity. Anything less keeps the loan above 80% loan-to-value, where PMI monthly charges protect the lender — not you.

Applications

▸Estimating total cash needed before house hunting
▸Comparing loan qualification across down payment percentages
▸Budgeting PMI cost until 80% LTV
▸Testing the cost of discount points on your rate
▸Walking extra monthly payments through the full schedule
▸Planning closing-week cash with the total upfront figure
▸Modeling investment property requirements of 15-25% down
▸Seeing how taxes and insurance impact the monthly total

Benefits

  • •Full schedule down to the final payment for every year
  • •PMI applied automatically when the down payment is under 20%
  • •Points and total upfront computed exactly like a lender quote
  • •Extra payment mode with payoff time and interest saved
  • •Pie chart and balance graphic live for every keystroke
  • •Exact engine math identical to the public amortization tables

Limitations

  • •Assumes a fixed rate and standard monthly compounding
  • •PMI is a single flat rate; lenders quote tiered prices
  • •Tax and insurance amounts are year-end estimates you supply
  • •Points reduce the rate incrementally, not modeled linearly here
  • •Closing costs (fee-based) are separate from the total upfront row

Best Practices

  • •Enter the true annual tax bill, not the county average
  • •Recheck insurance pricing online before using this as a quote
  • •Use 20% down for your baseline scenario, 10% for the trade-off
  • •Add a modest extra payment and watch the schedule shorten
  • •Look at the total of payments, not just the monthly number

Common Misconceptions

Myth: You must put 20% down or you cannot buy.
Truth: Conventional loans accept 3-5%, FHA 3.5%. The 20% rule only avoids PMI and often improves the rate.
Myth: PMI disappears when you switch lenders.
Truth: PMI stays until you reach 78-80% LTV of the current balance — with this calculator you can see exactly when.
Myth: Points are a good deal for every buyer.
Truth: Points make sense only when you keep the home past the breakeven. The total upfront row shows their real cost.
Myth: The rate is the monthly cost.
Truth: Taxes, insurance, PMI, and HOA almost always add 25-45% on top of the P&I payment.

Practical Tips

  • •Saving 20% down eliminates PMI — the strongest long-term single move on this page
  • •Automatic monthly transfers to a high-yield savings account accelerate the down payment
  • •State and local down payment assistance programs can cover part of the down payment
  • •Gift funds from family are allowed on conventional, FHA, and VA loans
  • •Run your own extra-payment plan; even $50/month removes months from the schedule
  • •Compare the 10% vs. 20% split before you choose your down payment
  • •Confirm insurance cost with a real quote so the monthly total is yours, not a guess

Common Mistakes

Using the 20% rule as a wall
The rule is about PMI, not feasibility: 5% down with PMI often moves a buyer into a home a full year earlier. Model both plans.
Paying infinite points on a short stay
Points only pay off with years. For a 3-5 year horizon, the upfront money is usually better kept.
Ignoring the total upfront cost
The down payment is not alone — the total upfront row includes what points actually cost at closing.
Treating the monthly amount as P&I only
Taxes, insurance, and PMI arrive with thescheduled payment. Always budget the total row.
Adding an extra payment and forgetting the payment cut
Extra money first goes to the highest-rate or PMI-covered balance; watch the schedule rebuild live instead of guessing.
Following an outdated tax or insurance quote
Lenders escrow the actual bills. Enter current numbers and update each year.

Assumptions

This calculator makes the following assumptions to provide estimates:

Fixed Rate: A constant rate over the full term; no adjustments are modeled.
PMI at Under 20%: PMI pricing is a flat yearly percentage of the loan whichever you enter.
Escrow-Style Sharing: Taxes and insurance are collected monthly with the amortization payment.
Payment Timing: Payments occur at month-end; and the schedule breaks yearly.
Points at Closing: Points are included in the total upfront, separate from the late-schedule summary.

Limitations

Be aware of these limitations when using this calculator:

No Escrow Picture: The total monthly includes taxes and insurance, but escrow collection details and impound rules vary by lender.
PMI Is a Quote Input: Your real PMI price depends on credit, loan program, and lender.
Rate Buy-Down Not Modeled: The effect of points on the daily rate itself is not computed; enter the rate you expect after the buy-down.
Fixed Schedule: Adjustable-rate resets, biweekly frequencies, and features like conversion options are outside this page.
Closing Costs Excluded: Appraisal, title, record fees, and other closing items are separate; only points are priced here.

Frequently Asked Questions

Answers to common questions about this calculator.

What is a down payment?
A down payment is the upfront portion of a home purchase paid by the buyer. It is typically expressed as a percentage of the purchase price, with the remainder financed through a mortgage.
How much down payment do I need for a house?
The required down payment varies by loan type: conventional loans require 3-5% minimum, FHA loans require 3.5%, VA and USDA loans may require 0%. A 20% down payment eliminates PMI on conventional loans.
What is a good down payment?
A 20% down payment is considered ideal because it eliminates PMI and often qualifies for better rates. However, any down payment above the minimum reduces your loan amount and monthly payments.
What is PMI and why does it matter for down payment?
PMI (Private Mortgage Insurance) is required on conventional loans when the down payment is less than 20%. It protects the lender and costs 0.3-1.5% of the loan amount annually, added to your monthly payment.
What is the minimum down payment for an FHA loan?
The minimum down payment for an FHA loan is 3.5% with a credit score of 580 or higher. Borrowers with scores between 500-579 need a 10% down payment.
Can I get a mortgage with no down payment?
Yes, VA loans (for eligible veterans and military) and USDA loans (for eligible rural areas) can require zero down payment. Some conventional loan programs also offer 3% down options. However, zero-down loans may have higher rates or additional fees.
How does down payment affect monthly payment?
A larger down payment reduces your loan amount, which directly lowers your monthly principal and interest payment. It can also eliminate PMI and qualify you for a better interest rate. For example, 20% down vs. 10% down on a $300,000 home can save $200+ per month.
Can I use gift money for a down payment?
Yes, FHA, conventional, and VA loans allow down payment gifts from family members. You will need a gift letter stating the amount, the donor relationship, and that no repayment is expected. FHA allows 100% gift funds; conventional loans may require some of your own funds.
What are down payment assistance programs?
Down payment assistance programs provide grants or low-interest loans to help homebuyers with their down payment and closing costs. They are offered by state and local housing agencies, non-profits, and some employers. Eligibility is often based on income and first-time buyer status.
Is 20% down payment still required?
No, 20% down is not required. Many loans allow 3-5% down. However, putting less than 20% down means you'll pay PMI on conventional loans, which adds to your monthly costs. The 20% threshold is important because it eliminates PMI, but it is not mandatory.
How much should I put down as a first-time buyer?
First-time buyers typically put down 6-10% on average. While 20% is ideal, many first-time buyers use FHA loans with 3.5% down or conventional loans with 3-5% down. Consider your savings, monthly budget, and local housing market when deciding.
What is the difference between down payment and earnest money?
Earnest money is a deposit made when your offer is accepted to show good faith (typically 1-3% of the purchase price). It is held in escrow and applied to your down payment at closing. The down payment is the full cash amount paid at closing toward the purchase.
What is the best down payment for an investment property?
Investment property down payments are typically higher than primary residence requirements. Conventional loans for investment properties usually require 15-25% down. The higher requirement reflects the increased risk of default on non-owner-occupied properties.
How does down payment affect interest rate?
A larger down payment typically qualifies you for a lower interest rate because it reduces the lender's risk. Borrowers with 20%+ down often get the best rates. Each 5% increase in down payment may reduce your rate by 0.125-0.25%.
What is the minimum down payment for a conventional loan?
The minimum down payment for a conventional loan is 3% for first-time homebuyers and 5% for repeat buyers. Loans with less than 20% down require PMI. Some programs offer 3% down with higher rates or stricter requirements.
Can I withdraw from my 401(k) for a down payment?
Some 401(k) plans allow loans or hardship withdrawals for a first-time home purchase. You can borrow up to $50,000 or 50% of your vested balance (whichever is less) and repay it with interest over 5+ years. However, this reduces your retirement savings.
What is an FHA 3.5% down payment loan?
An FHA loan with 3.5% down is a government-backed mortgage that requires only 3.5% of the purchase price as a down payment. It is available to borrowers with credit scores of 580+. The trade-off is you pay both upfront MIP (1.75%) and annual MIP.
How long does it take to save for a down payment?
The time needed depends on your income, expenses, savings rate, and target home price. For a $300,000 home with a 10% down payment ($30,000), saving $500/month takes 5 years. Down payment assistance and gifts can accelerate the process.
What happens if I put less than 20% down?
With less than 20% down on a conventional loan, you'll pay PMI (typically 0.3-1.5% of the loan annually) until you reach 20% equity. You may also get a slightly higher rate. However, you can buy a home sooner with less cash upfront.
Can I use my IRA for a down payment?
First-time homebuyers can withdraw up to $10,000 from a traditional IRA without the 10% early withdrawal penalty (though income tax still applies). Roth IRA contributions can be withdrawn anytime tax-free. This can help fund a down payment.
What is a piggyback loan for down payment?
A piggyback loan (or 80-10-10 loan) uses a second mortgage to cover part of the down payment, avoiding PMI. You put 10% down, take a first mortgage for 80%, and a second for 10%. This can be useful if you have good credit but limited cash.
How does the down payment affect closing costs?
A larger down payment generally means lower closing costs because you are financing less. However, many closing costs are fixed (appraisal, title insurance, recording fees) regardless of your down payment. Points and origination fees scale with loan amount.
What is the average down payment on a house?
The average down payment for US homebuyers is approximately 12-15% of the purchase price. First-time buyers average 6-8%, while repeat buyers average 16-20%. The median dollar amount varies significantly by region and home price.
How are points priced on a mortgage?
One point equals 1% of the loan amount, paid upfront to lower the interest rate. Each point typically reduces the rate by about 0.25%. If you pay points, they add to your total upfront payment, which this calculator shows.
Does the down payment percentage change the total interest paid?
Yes. A higher down payment shrinks the loan balance, so every percent of additional down payment removes a slice of the loan from the amortization schedule, reducing total interest substantially over 30 years.
What happens to PMI over time?
On conventional loans, PMI is typically cancelled automatically when your loan-to-value reaches 78%, or on request at 80% LTV. The payment schedule here shows PMI for every month it applies.
How do extra monthly payments shorten the loan?
Extra monthly payments go entirely to principal, cutting both the length of the schedule and the total interest. The calculator rebuilds the schedule and shows the payoff year and month plus the interest saved.
What is included in the total upfront payment?
The total upfront payment is the down payment plus the cost of discount points. It does not include closing costs, inspection costs, or reserves, which come at closing separately.
What is the difference between a down payment percentage and loan amount?
The down payment percentage expresses the upfront cash relative to the purchase price. The loan amount is what remains after subtracting the down payment (and excluding points, which are separate).
How does home insurance enter the monthly total?
Home insurance is paid annually but collected monthly through escrow. This calculator divides the yearly premium by 12 and adds it to the monthly payment, exactly as lenders handle it.
What happens if the total monthly payment does not fit my budget?
Lower the home price, raise the down payment, or extend the term to reduce the P&I portion. Reducing extra expenses like HOA or shopping for cheaper insurance also helps, and the schedule recalculates instantly.
How accurate are the amortization numbers here?
The schedule uses the standard monthly amortization formula on the loan amount and rate you enter. Lender delays, prepayment penalties, or payment dates that differ from your contract can shift the figures slightly.
Is a bigger down payment always better?
Not always. Tying up cash in the house removes it from your emergency fund and investments. A 20% down payment avoids PMI, but a 10% plan may leave you more liquidity — a trade-off the calculator shows with its full monthly picture.
Do FHA loans require PMI at any down payment?
FHA loans do not use PMI; they use mortgage insurance premiums (MIP). FHA requires MIP regardless of down payment — an upfront 1.75% premium plus annual premiums — which this calculator prices as a PMI-style monthly cost.
What is a balloon for down payment?
"Balloon" refers to the down payment structure, not the loan: some seller-financed or land-contract deals allow a smaller initial down payment with a larger lump sum due later. This calculator models a standard single-payment down payment.
What down payment do real estate investors need?
Investment property conventional loans typically require 15-25% down, sometimes 30% for multi-family properties. Owner-occupied rules like 3-5% down do not apply to non-owner-occupied loans, since lenders price the higher default risk of rentals.

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Glossary

Technical terms used in mortgage calculations explained in plain language.

Down Payment
Cash the buyer pays at closing; the loan finances the rest of the price.
LTV (Loan-to-Value)
The loan amount divided by the home value; 80% or lower avoids PMI.
PMI
Private mortgage insurance required on conventional loans below 20% down.
MIP
FHA mortgage insurance premium — upfront 1.75% and annual, required regardless of down payment size.
Points
Upfront fees of 1% of the loan, each typically lowered the rate by 0.25%.
Escrow
The monthly set-aside for annual taxes and insurance payments.
Amortization
The payment schedule that pays principal and would-be interest over the term.
P&I
The principal and interest portion of the monthly payment, before escrow items.
Earnest Money
The good-faith deposit held in escrow before closing, applied to the down payment.
Piggyback Loan
A second mortgage that covers part of the down payment to avoid PMI (80-10-10).

Authoritative References

Trusted sources and standards referenced by this calculator.

Applicable Standards

Truth in Lending Act (Regulation Z)RESPA (Real Estate Settlement Procedures Act)FHA Single Family Housing Policy Handbook (HUD 4000.1)

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Page Information

Last Updated:

2026-08-07

Version:

2.0.0

License:

Free to use for educational and professional purposes.