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OffMarket Deck · Updated 2026-07-28
PITI stands for Principal, Interest, Taxes, and Insurance. It is the complete monthly housing payment on a financed property, not just the loan payment you see on an amortization schedule. If you are underwriting a rental, a flip, or a wholesale assignment, PITI is the number that determines whether the deal cash flows or bleeds.
Most new investors look at the mortgage payment alone. They miss property taxes, homeowners insurance, and — when required — private mortgage insurance (PMI) or flood insurance. A property that looks profitable at $1,200/month in principal and interest can turn negative once $400 in taxes and $150 in insurance are added. That is why a dedicated PITI mortgage calculator is essential before you make an offer.
This guide explains how to calculate PITI manually, what each component costs, how to estimate taxes and insurance when you do not yet own the property, and how to use OffMarket Deck's free mortgage calculator to speed up the process. Every example uses realistic numbers you can adjust for your own market.
Principal is the portion of your monthly payment that reduces the outstanding loan balance. On a $250,000 loan at 7.5% interest over 30 years, the monthly principal and interest payment is about $1,748. In the first month, only $186 of that goes to principal. The rest is interest. Over time, the principal portion grows and the interest portion shrinks.
Interest is the lender's fee for using their capital. It is calculated on the remaining loan balance. At the same 7.5% rate, the first month of interest on a $250,000 loan is $1,562. By year 15, the balance has dropped enough that the interest portion is roughly $1,000. Small changes in rate have a large impact on total interest paid over the life of the loan.
Property taxes are levied by the county or municipality. They vary widely. In New Jersey, effective property tax rates can exceed 2.2% of assessed value. In Hawaii, they can be below 0.35%. For underwriting, use the actual tax bill from the listing or the county assessor's website, not a national average. If the annual tax is $4,800, the monthly tax portion of PITI is $400.
Hazard insurance protects against fire, wind, theft, and liability. It is required by lenders and is usually paid through an escrow account. Flood insurance is required in FEMA-designated flood zones. PMI is required when the down payment is less than 20%. For investors, many lenders also require a minimum level of liability coverage. Always get a quote from an insurance agent rather than guessing.
Let us walk through a real-estate investment scenario. You are considering a single-family rental in Houston, Texas, listed at $300,000. You plan to put 20% down and finance the rest at 7.25% over 30 years.
List price: $300,000. Down payment: 20% = $60,000. Loan amount: $240,000. Because you are putting 20% down, you avoid PMI. This simplifies the monthly calculation.
Using the standard mortgage formula, the monthly principal and interest payment on a $240,000 loan at 7.25% for 30 years is approximately $1,637. You can verify this in Excel with the PMT function: =PMT(7.25%/12, 360, 240000). The result is negative because it represents a cash outflow; the absolute value is $1,637.
The Harris County tax records show annual taxes of $5,400 for this property. Divide by 12 to get $450 per month. This is a real number from the county, not a guess. Never use a national average when the actual tax bill is available.
Your insurance agent quotes $1,440 per year for a landlord policy with $300,000 in dwelling coverage and $1 million in liability. That is $120 per month. The property is not in a flood zone, so no flood insurance is needed.
PITI = $1,637 (principal and interest) + $450 (taxes) + $120 (insurance) = $2,207 per month. If the market rent for this property is $2,500, the gross monthly cash flow before maintenance, vacancy, and management is $293. That is a narrow margin. Any unexpected repair or vacancy can wipe it out.
| Component | Annual Cost | Monthly Cost |
|---|---|---|
| Principal and Interest | $19,644 | $1,637 |
| Property Taxes | $5,400 | $450 |
| Insurance | $1,440 | $120 |
| Total PITI | $26,484 | $2,207 |
Lenders use PITI to calculate the front-end debt-to-income ratio (DTI). The front-end DTI is PITI divided by gross monthly income. Most conventional lenders cap this at 28% for owner-occupants. Investors are usually evaluated on the back-end DTI, which includes all monthly debt obligations, and rental income is counted after adjustments.
But PITI is not the total cost of ownership. Investors must also budget for property management, maintenance, capital expenditures, vacancy loss, and utilities if the tenant does not pay them. A common rule of thumb is to set aside 25-35% of gross rent for these non-PITI expenses. In the Houston example, 30% of $2,500 rent is $750. After PITI of $2,207 and reserves of $750, the property is cash-flow negative by $457 per month before tax benefits.
This is why PITI alone is not enough. It is the minimum monthly obligation. Smart underwriting layers operating expenses on top of it to find the true cash flow. A good PITI mortgage calculator helps you test the minimum obligation quickly, but you still need a separate operating expense estimate.
| Metric | Formula | Houston Example |
|---|---|---|
| PITI | P+I+T+I | $2,207 |
| Operating Reserves (30% of rent) | Gross rent × 0.30 | $750 |
| Total Monthly Obligation | PITI + reserves | $2,957 |
| Net Monthly Cash Flow | Gross rent - total obligation | -$457 |
Not every investor loan calculates PITI the same way. The loan type determines whether taxes and insurance are escrowed, whether the payment is fixed or interest-only, and whether mortgage insurance applies. Understanding these differences keeps your underwriting accurate.
Conventional loans for investors usually require 20-25% down, have fixed rates for 15 or 30 years, and escrow taxes and insurance. The PITI you calculate is the same every month for the fixed period. This is the most predictable structure for buy-and-hold rentals. The main constraint is the debt-to-income ratio, which limits how many properties you can finance in your own name.
Debt Service Coverage Ratio (DSCR) loans qualify based on the property's income, not your personal income. The lender wants the rent to cover the PITI by a ratio of 1.2 or higher. For the Houston example, a PITI of $2,207 requires rent of at least $2,648 to hit a 1.2 DSCR. The $2,500 rent in the example fails this test. DSCR loans often have slightly higher rates than conventional loans, but they scale better for investors with many properties.
Hard money loans are short-term, asset-based loans used by flippers and BRRRR investors. Most are interest-only during the term, with a balloon payment at the end. Because there is no principal reduction, the monthly payment is lower than a fully amortized PITI payment. A $240,000 loan at 11% interest-only costs $2,200 per month. But remember: the principal is still due eventually. Hard money PITI is simpler to calculate, but it is only a hold-period cost, not a long-term financing structure.
Portfolio lenders keep the loans on their own books, so they can set custom terms. Some portfolio lenders offer blanket loans that cover multiple properties with one combined PITI payment. This reduces administrative overhead but makes it harder to track the performance of individual properties. Always request an amortization schedule that breaks out each property's principal and interest if you use a blanket structure.
| Loan Type | Payment Structure | Best For | PITI Note |
|---|---|---|---|
| Conventional | Fixed P&I, 15-30 years | Buy-and-hold rentals | Most predictable; escrowed T&I |
| DSCR | Fixed or adjustable | Investors with many properties | Rent must cover PITI by 1.2x+ |
| Hard Money | Interest-only, short term | Flips and BRRRR | No principal paydown; balloon due |
| Portfolio/Blanket | Custom terms | Multiple property portfolios | Track per-property breakdown |
The most accurate way to estimate property taxes is to look up the parcel on the county assessor's website. The tax bill is public record. Some states reassess on sale, which means the taxes will jump to the new purchase price. California, for example, limits reassessment increases under Proposition 13, but the sale itself triggers a new assessed value. Texas does not have such a cap, so a sale at $300,000 will be taxed at roughly $300,000 times the local millage rate.
Insurance costs vary by state, roof age, electrical system, and flood zone. A 50-year-old home with a 20-year-old roof in Florida can cost three times as much to insure as a newer home in Ohio. The only way to know the real number is to get a quote. If you are analyzing many deals, build a relationship with one or two insurance agents who can turn around quotes quickly.
Investor loans with less than 20% down often require mortgage insurance. The cost ranges from 0.3% to 1.5% of the loan amount annually. On a $240,000 loan, 0.75% annual mortgage insurance is $1,800 per year, or $150 per month. Portfolio lenders and DSCR lenders may structure this differently, but the cost is real. Always include it in your PITI calculation if your loan requires it.
Manual calculations are useful for understanding the mechanics, but they are too slow when you are evaluating 10 or 20 deals per week. A PITI mortgage calculator lets you input purchase price, down payment, interest rate, loan term, annual taxes, and annual insurance, then returns the monthly PITI instantly. It also lets you stress-test rate changes.
For example, what happens if rates rise from 7.25% to 8.0% on the Houston property? The principal and interest payment rises from $1,637 to $1,761, an increase of $124 per month. Over a year, that is $1,488 less cash flow. At the same time, the property value may fall because buyers can afford less. A calculator makes this sensitivity analysis fast.
| Interest Rate | Monthly P&I | Monthly PITI | Annual Cash Flow Impact |
|---|---|---|---|
| 6.75% | $1,557 | $2,127 | +$960 vs. 7.25% |
| 7.25% | $1,637 | $2,207 | Baseline |
| 7.75% | $1,719 | $2,289 | -$984 vs. 7.25% |
| 8.25% | $1,803 | $2,373 | -$1,992 vs. 7.25% |
OffMarket Deck's free mortgage calculator does exactly this. It breaks out principal, interest, taxes, and insurance so you can see where the money goes. It also handles PMI, extra payments, and amortization schedules. Use it whenever you are evaluating an off-market deal from the OffMarket Deck inventory.
For rentals, PITI is the baseline expense. Rent must exceed PITI plus operating reserves by a meaningful margin. Many investors use the 1% rule as a quick screen: monthly rent should be at least 1% of the purchase price. In the Houston example, $2,500 rent on a $300,000 property is 0.83%, which fails the 1% rule. That does not mean it is a bad deal, but it means you need deeper analysis.
Flippers usually hold properties for 3-9 months. PITI during the hold period is a carrying cost that reduces profit. A flipper who pays $2,200 per month in PITI and holds for 6 months spends $13,200 in carrying costs. This must be included in the maximum allowable offer (MAO) calculation. It is one reason experienced flippers prefer hard money loans with interest-only payments during the rehab.
Wholesalers do not typically make PITI payments because they never close on the property. However, they need to understand PITI to calculate the cash flow their end buyer will see. If a cash buyer asks, "Will this rental cover its debt service?" you need a credible PITI estimate to answer. This makes you a more valuable wholesaler.
The BRRRR strategy — Buy, Rehab, Rent, Refinance, Repeat — depends on refinancing into a long-term loan after the rehab. The refinance PITI is what determines whether you can pull your cash out and keep the property. If the post-rehab appraisal is lower than expected, the new loan amount is smaller, and your PITI is higher relative to rent. This is the most common reason BRRRR deals fail to return capital.
PITI is the foundation of real estate underwriting. Principal, interest, taxes, and insurance together define the minimum monthly cost of owning a financed property. If you ignore any component, you will overpay for deals, underestimate carrying costs, or miss warning signs that better investors see immediately.
Before you make your next offer, run the numbers through a reliable PITI mortgage calculator. Use OffMarket Deck's free mortgage calculator to break down each component, test rate changes, and see whether the deal on your screen actually cash flows. Then pair that analysis with live off-market inventory on the OffMarket Deck deals feed to find your next property.
### FAQQ: What is PITI in real estate? PITI is the total monthly mortgage payment on a property, including Principal, Interest, Taxes, and Insurance. It is the number lenders use to calculate front-end debt-to-income ratios.
Q: Does PITI include HOA fees? No. HOA fees are a separate expense. Lenders consider them in your total debt-to-income ratio, but they are not part of the PITI acronym.
Q: How do I calculate PITI on an investment property? Calculate the monthly principal and interest payment, add the monthly property tax estimate, and add the monthly insurance estimate. Include PMI if your down payment is below 20%. Use a PITI mortgage calculator to speed this up.
Q: Why is PITI higher than the mortgage payment shown online? Online mortgage calculators often show only principal and interest. PITI adds taxes and insurance, which can increase the monthly payment by 30-50% in high-tax or high-insurance markets.
Q: Can I use PITI to evaluate a wholesale deal? Yes. Even though you may not close, your end buyer will. A buyer who plans to finance the property needs to know PITI to determine cash flow and offer price.
Q: What is a good PITI-to-rent ratio? A common rule of thumb is that PITI should be 75% or less of market rent, leaving room for operating expenses and profit. In high-appreciation markets, investors may accept tighter ratios for the appreciation upside.
Written by the OffMarket Deck team. Last updated: July 2026.
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