Key Takeaways
The formula, the shortcut, and worked tables for every combination of price, down payment, rate and term.
- Three numbers set every payment: the amount financed, the rate, and the term. Nothing else moves it.
- The fastest shortcut: at 9% over 10 years, every $1,000 financed costs $12.67 a month. Multiply by your balance in thousands.
- A bigger down payment cuts both the payment and the total interest. A longer term cuts the payment and raises the interest sharply.
- Your rate has a legal floor and a legal ceiling. The IRS applicable federal rate below, your state’s usury cap above.
- Every figure here is principal and interest only. Property taxes, insurance and late fees sit outside the payment and belong in the note.
Whether you are a seller quoting terms or a buyer sizing up an offer, the first question is always the monthly payment. It is not a matter of opinion or negotiation style. It is arithmetic, and this page gives you the formula, a one-table shortcut, and worked examples for every common structure.
Every figure below was computed, not estimated. If you are still deciding whether to carry a note at all, start with our guide to owner financing land.
Quick verdict: use the per-$1,000 table to get any payment in seconds, then use the scenario tables to see how each variable moves the number. Sellers should model three or four structures before quoting anything. Buyers should confirm the payment fits with room for property taxes on top, because those are not included.
How Do You Calculate an Owner Financed Land Payment?
With the standard amortization formula, the same one a bank uses on a mortgage. The payment spreads the financed amount plus interest evenly across every month of the term, so each payment is identical and the balance reaches zero on the final one.
Monthly payment = P x ( r x (1 + r)^n ) / ( (1 + r)^n – 1 )
P is the amount financed, meaning the price minus the down payment. r is the monthly rate, the annual rate divided by 12. n is the number of monthly payments, the term in years multiplied by 12.
For $40,000 financed at 9% over 10 years, the formula returns $506.70 a month.
Monthly Payment Per $1,000 Financed
The fastest way to price any deal. Find your rate and term, then multiply by your financed amount divided by 1,000.
| Rate | 5 years | 10 years | 15 years | 20 years |
| 6% | $19.33 | $11.10 | $8.44 | $7.16 |
| 7% | $19.80 | $11.61 | $8.99 | $7.75 |
| 8% | $20.28 | $12.13 | $9.56 | $8.36 |
| 9% | $20.76 | $12.67 | $10.14 | $9.00 |
| 10% | $21.25 | $13.22 | $10.75 | $9.65 |
| 12% | $22.24 | $14.35 | $12.00 | $11.01 |
Financing $30,000 at 8% over 15 years is 30 x $9.56, or about $287 a month. Financing $65,000 at 10% over 20 years is 65 x $9.65, or about $627. Both are within a dime of the exact figure.
All values are principal and interest on a fully amortizing loan with no balloon.
Payment Examples by Land Price
Each row uses 20% down, 9% interest and a 10-year term, a common mid-range structure.
| Price | Down (20%) | Financed | Monthly | Total interest | Total paid with down |
| $10,000 | $2,000 | $8,000 | $101.34 | $4,160.87 | $14,160.87 |
| $25,000 | $5,000 | $20,000 | $253.35 | $10,402.19 | $35,402.19 |
| $50,000 | $10,000 | $40,000 | $506.70 | $20,804.37 | $70,804.37 |
| $75,000 | $15,000 | $60,000 | $760.05 | $31,206.56 | $106,206.56 |
| $100,000 | $20,000 | $80,000 | $1,013.41 | $41,608.74 | $141,608.74 |
Look at the $50,000 row from a seller’s side. The parcel sells for $50,000, and the seller collects $70,804.37 across the deal, of which $20,804.37 is interest. That gap is the whole argument for carrying a note: one sale becomes a decade of income well above the cash price.
How the Down Payment Changes the Payment
A $50,000 parcel at 9% over 10 years, at four common down payments.
| Down | Amount | Financed | Monthly | Total interest |
| 10% | $5,000 | $45,000 | $570.04 | $23,404.92 |
| 20% | $10,000 | $40,000 | $506.70 | $20,804.37 |
| 30% | $15,000 | $35,000 | $443.37 | $18,203.82 |
| 40% | $20,000 | $30,000 | $380.03 | $15,603.28 |
There is a federal reference point worth knowing before you settle on a number. The Interagency Guidelines for Real Estate Lending Policies set a supervisory loan-to-value limit of 65% for raw land, against 85% for improved property. A regulated lender working to that guideline wants 35% down on a parcel with nothing on it.
You are not bound by that, and most sellers ask considerably less. But it tells you where the professional risk assessment sits, and it explains why the down payment is doing so much work: it is both your screening tool and what you keep if you ever take the land back. Our guide to the land contract down payment covers how to structure the deposit itself.
How the Interest Rate Changes the Payment
$40,000 financed over 10 years, across the realistic range.
| Rate | Monthly | Total interest | Total paid |
| 6% | $444.08 | $13,289.84 | $53,289.84 |
| 7% | $464.43 | $15,732.07 | $55,732.07 |
| 8% | $485.31 | $18,237.25 | $58,237.25 |
| 9% | $506.70 | $20,804.37 | $60,804.37 |
| 10% | $528.60 | $23,432.35 | $63,432.35 |
| 12% | $573.88 | $28,866.06 | $68,866.06 |
The spread matters far more over the decade than it does month to month. Moving from 6% to 10% adds $84.52 to the monthly payment and $10,142.51 to the total interest.
Your rate sits between two limits rather than in a customary band. The floor is the IRS applicable federal rate, which for September 2026 is 4.18% short-term, 4.49% mid-term and 5.12% long-term, published under section 1274(d). Price a note meaningfully below the relevant AFR and the IRS can recharacterise part of what you thought was principal as interest. The ceiling is your state’s usury limit, which varies widely and should be checked locally.
Between those, the reference in a buyer’s head is the ordinary mortgage market. Freddie Mac’s survey put the 30-year fixed average at 6.76% on 10 September 2026. Land notes normally price above that, because the seller is accepting risk a bank declined at any price.
How far above is a function of the down payment and the buyer rather than a fixed premium. A buyer putting 35% down on a parcel you would happily take back is a different proposition from one putting 10% down on ground you would struggle to resell, and the rate should reflect that. Our breakdown of owner financing interest rates covers how the rate, term and down payment trade against each other.
How the Term Changes the Payment
$40,000 financed at 9%, across four terms.
| Term | Monthly | Total interest | Total paid |
| 5 years | $830.33 | $9,820.05 | $49,820.05 |
| 10 years | $506.70 | $20,804.37 | $60,804.37 |
| 15 years | $405.71 | $33,027.19 | $73,027.19 |
| 20 years | $359.89 | $46,373.69 | $86,373.69 |
This is the sharpest trade-off on the page. Stretching from 5 years to 20 cuts the monthly payment by more than half, from $830.33 to $359.89, which widens the pool of buyers who can afford the parcel. It also multiplies the total interest by nearly five, from $9,820.05 to $46,373.69.
Sellers who want long-run income prefer longer terms. Buyers who want to own clear sooner prefer shorter ones. Neither is wrong, and the table shows exactly what each choice costs.
How Does a Balloon Payment Work?
A balloon calculates the monthly payment on a long amortization schedule, then requires the entire remaining balance as a lump sum on a set date. It keeps the payment low while giving the seller a defined payoff.
Take the same $40,000 at 9%, with payments calculated on a 20-year schedule but the balance due at year 5.
| Figure | |
| Monthly payment (20-year schedule) | $359.89 |
| Paid over the first 5 years | $21,593.42 |
| Balloon due at year 5 | $35,482.82 |
| Compare: fully amortizing 5-year payment | $830.33, no lump sum |
Note what the balloon figure actually says. After five years and $21,593.42 in payments, the balance has fallen from $40,000 to $35,482.82, because early payments on a 20-year schedule are almost entirely interest.
The structure suits a buyer who expects to refinance or resell before the date. Both sides need to understand that a five-figure payment comes due on a fixed day, and the note has to say what happens if it does not arrive.
Shorten the amortization schedule and the balloon shrinks fast. The same $40,000 at 9% amortized over 10 years instead of 20, with the balloon still at year 5, carries a $506.70 payment and leaves $24,409.60 outstanding rather than $35,482.82. You are trading a higher monthly payment for a smaller lump sum, and which side of that trade suits you depends entirely on whether you expect the buyer to actually refinance.
Sellers should also decide upfront what happens if the balloon is missed. An extension on agreed terms, a renegotiated schedule and a straight default are three different outcomes, and the note is the only place to set which one applies.
What the Calculator Leaves Out
Every figure above is principal and interest. Several real costs sit outside it.
Property taxes and insurance. On vacant land these are normally the buyer’s responsibility and are paid separately, not escrowed into the note payment the way a home mortgage works. The agreement should say who pays, and the seller should confirm each year that taxes are current, because a tax lien can jump ahead of the seller’s position.
Late fees, servicing and closing costs. A third-party loan servicer charges a fee. A title company or attorney handles closing. Late fees and the grace period are whatever the note says they are.
Getting all of that into the promissory note is what turns a clean calculation into an enforceable agreement, and our guide to how to write a land contract covers what each document has to contain.
How Do You Use These Numbers to Structure a Deal?
Model three or four structures before you quote anything, because the best deal balances an affordable payment for the buyer against income and security for the seller.
Settle the price first, since every payment flows from it. Then test combinations: a higher down payment with a shorter term, a lower down payment with a longer one, and one with a balloon. Read across to the total interest column, because two structures with similar monthly payments can differ by tens of thousands over the life of the note.
Once price and terms are set, the process of drafting the note, screening the buyer and recording the paperwork is covered in our step-by-step guide to seller financing land.
Quick Reference: 9% Over 10 Years, 20% Down
| Scenario | Financed | Monthly |
| $15,000 lot | $12,000 | $152.01 |
| $20,000 lot | $16,000 | $202.68 |
| $40,000 parcel | $32,000 | $405.36 |
| $60,000 parcel | $48,000 | $608.04 |
| $80,000 parcel | $64,000 | $810.72 |
Browsing real owner financed land listings shows how sellers in your area actually structure down payments and terms, which is a useful reality check against any table.
When your numbers are set, selling your land with the financing terms stated in the listing is what reaches buyers searching specifically for them. Buyers filter on the monthly payment far more than on the headline price, so a listing that shows the payment alongside the price is doing work that a price alone cannot.
Run Your Own Numbers
The math is the easy part once it is laid out. Modelling three structures takes ten minutes and it is the difference between quoting terms with confidence and guessing.
Need the price first? Get a free estimate for your parcel, then run it through the tables above.
Frequently Asked Questions
How do I calculate the monthly payment on owner financed land?
Use the amortization formula: the financed amount times the monthly rate times one plus the monthly rate to the power of the number of payments, divided by that same power minus one. The per-$1,000 table above does it instantly instead. For $40,000 financed at 9% over 10 years the payment is $506.70 a month.
What interest rate should I charge on owner financed land?
Between two limits rather than in a customary band. The floor is the IRS applicable federal rate, 5.12% long-term in September 2026, below which part of your principal can be recharacterised as interest. The ceiling is your state’s usury cap. Buyers compare against ordinary mortgage rates, 6.76% on the 30-year in September 2026.
How much should the down payment be on owner financed land?
There is no fixed answer, but there is a federal reference point. The interagency supervisory loan-to-value limit for raw land is 65%, meaning a regulated lender would want 35% down. Sellers commonly ask less. The down payment is both your screening tool and what you keep on default, so set it deliberately.
What is a balloon payment on a land contract?
A lump sum of the remaining balance due on a set date, after years of lower payments calculated on a longer schedule. On $40,000 at 9% amortized over 20 years with a balloon at year 5, the payment is $359.89 and the balloon is $35,482.82. Early payments are mostly interest, so the balance barely moves.
Does the owner financing payment include property taxes?
No. The standard payment covers principal and interest only. On vacant land, property taxes and any insurance are typically the buyer’s responsibility and are paid separately rather than escrowed the way a home mortgage does it. Your agreement should state who pays and confirm taxes stay current.
Resources and Further Reading
- IRS Revenue Ruling 2026-17 publishes the September 2026 applicable federal rates under section 1274(d), the floor for any seller-financed note.
- IRS Publication 537: Installment Sales explains how gain and interest on a seller-financed sale are reported as payments are received.
- Interagency Guidelines for Real Estate Lending Policies, 12 CFR Part 365 contains the supervisory loan-to-value limits, including 65% for raw land.
- Freddie Mac Primary Mortgage Market Survey publishes the weekly 30-year and 15-year fixed mortgage averages.
