Mortgage Calculator — Your Monthly Payment & True Total Cost
Analyze PITI, taxes, insurance, and PMI to understand your true monthly housing costs with clinical precision.
Reviewed by Dr. Zohaib Ali
Last updated April 2026
Quick Answer Box
Monthly mortgage payment (principal + interest) = P × [r(1+r)^n] ÷ [(1+r)^n − 1], where P = loan principal, r = monthly interest rate (annual rate ÷ 12), and n = total number of payments.
At the current national average 30-year rate of 6.23% (Freddie Mac, April 23, 2026), a $320,000 loan (20% down on a $400,000 home) produces a monthly P&I payment of approximately $1,971. Add property taxes, homeowners' insurance, and PMI (if applicable) for your full monthly housing cost.
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Financial Disclaimer
This calculator provides estimates for educational purposes only. Results are not a loan offer, guarantee of financing, or financial advice. Actual payments, rates, and costs vary based on your credit score, lender, location, and individual financial circumstances. Consult a licensed mortgage professional before making home purchasing decisions. For personalized rate quotes, contact multiple lenders and compare APRs, not just interest rates.
The Number the Mortgage Industry Doesn’t Want You to Focus On:
The mortgage industry is very good at getting you to focus on one number: your monthly payment. It’s the number in every ad, the number your real estate agent references, and the number lenders optimize to fit your budget. But it’s not the most important number.
The most important number is the total cost of your home.
On a $400,000 home with 20% down at the current national average 30-year rate of 6.23% (Freddie Mac, April 23, 2026), your monthly principal and interest payment is approximately $1,971. Over 360 payments, your total repayment is approximately $709,560 in principal and interest, meaning you pay for your $320,000 loan nearly two and a quarter times over. Add origination fees, property taxes, insurance, and maintenance over 30 years, and the true all-in cost of that $400,000 home can exceed $900,000.
That is not an argument against buying a home. Homeownership builds equity, provides housing stability, and historically outperforms renting for long-term wealth building. It is an argument for entering the transaction with complete information, because the decisions you make at the start (down payment size, loan term, rate negotiation, extra payments) have compounding effects measured in tens of thousands of dollars.
This calculator shows you both numbers: your monthly payment and your true total cost. Use both.
The Mortgage Payment Formula Explained:
The standard mortgage payment formula calculates your fixed monthly principal and interest (P&I) payment:
Where:
- - P = Loan principal (home price minus down payment)
- - r = Monthly interest rate (annual rate ÷ 12)
- - n = Total number of monthly payments (years × 12)
Example at current rates:
- - Home price: $400,000 | Down payment: $80,000 (20%) | Loan: $320,000
- - Annual rate: 6.23% → Monthly rate: 0.5192%
- - Term: 30 years → 360 payments
- - Monthly P&I = $1,971
Your full monthly housing payment adds: property taxes (typically 1–1.5% of home value annually ÷ 12), homeowners' insurance (approximately $150–$250/month for most US homes), HOA fees (if applicable), and PMI (if your down payment is under 20%).
What’s Included in Your Monthly Mortgage Payment PITI Explained:
Most people know their monthly mortgage includes principal and interest. Most people don’t fully account for the other two components:
P - Principal
The portion of your payment that reduces your loan balance. In the early years of a 30-year mortgage, very little of each payment goes to principal. On the first payment of a $320,000 loan at 6.23%, approximately $312 goes to principal and $1,659 goes to interest. By payment 200 (year 16), that split begins to reverse.
I - Interest
The cost of borrowing money. At 6.23%, a $320,000 loan generates approximately $19,932 in interest in year one alone before you’ve meaningfully reduced the balance.
T - Taxes
Property taxes in the US average approximately 0.9–1.2% of assessed home value annually, though rates vary dramatically by state. Texas (1.7%), New Jersey (2.2%), and Illinois (2.0%) have among the highest rates. Hawaii (0.3%), Alabama (0.4%), and Colorado (0.5%) have among the lowest. On a $400,000 home, annual property taxes range from $1,200 to $8,800, depending on where you live.
I - Insurance
Homeowners insurance averages approximately $1,900–$2,400 annually for a $400,000 home in most US states, though Florida, Louisiana, and Oklahoma have dramatically higher premiums due to weather risk. Lenders require homeowners' insurance as a condition of any mortgage.
PMI (if applicable)
Private mortgage insurance is required by most lenders when your down payment is below 20% of the home’s value. PMI averages 0.46–1.50% of the loan amount annually (Bankrate, 2026), or approximately $0.46–$1.50 per $100 borrowed. On a $320,000 loan, PMI adds $123–$400 per month. PMI is not permanent; see the PMI removal section below.
15-Year vs. 30-Year Mortgage: The True Cost Comparison at April 2026 Rates
Comparison at Freddie Mac rates (April 2026): 30-year at 6.23% vs 15-year at 5.58%
| Feature | 30-Year Fixed | 15-Year Fixed |
|---|---|---|
| Monthly P&I | ~$1,971 | ~$2,630 |
| Monthly difference | — | +$659 more |
| Total interest paid | ~$389,560 | ~$153,400 |
| Total repayment | ~$709,560 | ~$473,400 |
| Interest saved | — | ~$236,160 |
| Payoff date | April 2056 | April 2041 |
The 15-year borrower pays $659 more per month but saves over $236,000 in interest and pays off their home 15 years earlier. That’s a return on the higher monthly payment of approximately $358 in savings for every extra dollar paid monthly, over the life of the loan.
Who the 15-year makes sense for:
- Borrowers with stable, sufficient income where the higher payment is comfortable, typically households where housing costs represent under 25% of gross income.
- Borrowers close to retirement who want to eliminate their mortgage payment before leaving the workforce.
- Buyers who plan to stay in the home for the full term.
Who the 30-year makes more sense for:
- First-time buyers stretching to afford their home purchase.
- Borrowers with other high-interest debt can benefit from lower housing payments and redirecting cash to debt payoff.
- Buyers in early career with a strong income growth trajectory who plan to refinance or make extra payments.
The Extra Payment That Changes Everything:
If you can’t swing the 15-year payment but want to reduce your total interest burden on a 30-year loan, extra payments are your most powerful tool.
At 6.23% on a $320,000 loan:
| Extra Monthly Payment | Years Saved | Interest Saved |
|---|---|---|
| $100/month extra | ~2.5 years | ~$34,200 |
| $200/month extra | ~4.7 years | ~$62,800 |
| $500/month extra | ~10.2 years | ~$121,400 |
| $1,000/month extra | ~16.1 years | ~$176,600 |
The $200/month insight: Paying an extra $200 per month, roughly the cost of a streaming subscription bundle and two restaurant dinners, saves nearly $63,000 in interest and finishes your mortgage almost 5 years early. That’s the highest-return, lowest-friction financial move available to most homeowners.
Rules for extra payments:
- Confirm with your lender that extra payments apply to principal (not future payments), specify “apply to principal” on each extra payment.
- Extra payments are most impactful in the first 5–10 years of the loan, when your balance is highest.
- If your mortgage rate is below 6%, compare the interest savings to what the same money would earn invested in index funds before committing to aggressive extra payments
PMI How to Get Rid of It Faster Than You Think:
If your down payment was under 20%, you’re likely paying PMI. Here’s how to remove it:
Method 1: Scheduled removal (automatic):
The Homeowners Protection Act (HPA) requires lenders to automatically cancel PMI when your loan balance reaches 78% of the original home value (assuming you’re current on payments). On a $400,000 home with 10% down, this occurs at month 67 (approximately 5.6 years) on a standard 30-year at 6.23%.
Method 2: Request removal at 80% LTV:
You can request PMI cancellation when your balance reaches 80% of the original purchase price. At 6.23% with 10% down, this occurs at approximately month 56 (year 4.7). Contact your servicer, request a cancellation, and they may require a home appraisal.
Method 3: Home appreciation (fastest route):
If your home’s value has increased, you may reach 80% LTV faster than the amortization schedule suggests. If you bought a $400,000 home with 10% down ($40,000), your original loan is $360,000. If the home appreciates to $450,000, your loan-to-value is now $360,000 ÷ $450,000 = 80%. You can request an appraisal and PMI cancellation immediately. At the current US average home appreciation rate of approximately 4% per year, this scenario can occur in under 2 years.
Current Mortgage Rate Context April 2026:
Understanding where rates are and why matters for timing decisions and expectation setting.
Where rates stand today: The 30-year fixed-rate mortgage averaged 6.23% for the week ending April 23, 2026, according to Freddie Mac’s Primary Mortgage Market Survey, down from 6.30% the prior week and down significantly from 6.81% a year ago. The 15-year fixed averaged 5.58%, also down from 5.65% the week prior.
Why rates are elevated: Mortgage rates are primarily driven by the 10-year US Treasury yield, to which lenders add a risk premium of 1.5–3.0%. The 10-year Treasury currently trades around 4.24%. The Iran War, which began February 28, 2026, has pushed oil prices higher, contributing to elevated inflation. The March 2026 CPI showed 3.3% annual inflation, the fastest pace since April 2024. Higher inflation pressures the Federal Reserve to keep rates elevated.
Where rates are headed: Freddie Mac’s chief economist and most major forecasters expect 30-year rates to remain above 6% through 2026. The Fed began a rate-cutting cycle in September 2024 and has reduced the federal funds rate to 3.5–3.75%, but the transmission from Fed rate cuts to mortgage rates is indirect. Rates hit a 2026 low of 6.09% before rising on Iran War concerns. Unless inflation moderates significantly, a return to 5% rates is not expected in the near term.
The borrower takeaway:
Rates are lower than a year ago (6.81% in April 2025) but elevated by historical standards. The spring buying season is active. Shopping multiple lenders remains the single most impactful action any borrower can take. Freddie Mac data consistently shows borrowers who get 5 quotes save an average of $1,500+ over those who accept the first offer.
Source: Freddie Mac PMMSHow Much House Can You Afford in 2026?
The traditional guideline is that your total monthly housing costs (PITI) should not exceed 28% of your gross monthly income. But this rule was calibrated for a lower-rate environment. Here’s how it translates at current rates:
| Gross Annual Income | 28% Monthly Housing Budget | Max Home Price (20% down, 6.23%) |
|---|---|---|
| $60,000 | $1,400/month | ~$195,000 |
| $80,000 | $1,867/month | ~$265,000 |
| $100,000 | $2,333/month | ~$335,000 |
| $120,000 | $2,800/month | ~$405,000 |
| $150,000 | $3,500/month | ~$510,000 |
| $200,000 | $4,667/month | ~$685,000 |
These figures include P&I only. Add property taxes, insurance, and HOA to the monthly budget before finalizing affordability.
The DTI rule that lenders actually use: Most conventional lenders cap your total debt-to-income ratio (DTI) at 43–45%, which includes all monthly debt payments (mortgage + car loans + student loans + minimum credit card payments) relative to gross monthly income. FHA loans allow up to 57% DTI in some cases. Being within the 28% housing ratio but above 43% DTI on total debt will likely result in a higher rate or denial.
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