Section 180 lets a farmer deduct the excess fertility present in farmland at the time of purchase: the phosphorus, potassium, and other nutrients above the normal level a crop would use, left behind by the prior owner. It is a deduction, which changes when you write off the cost, not a credit. It applies to residual fertilizer, not to the general value of the dirt.
This is the part that makes or breaks a claim. The tests have to be specific to the parcels you bought, not area-wide averages. They need to show fertility above the baseline a normal crop would use, and a link back to the prior owner's actual applications. Generic regional data will not hold up.
Claim it for the year you buy the land, on a return filed on time, extensions included. The soil testing belongs in that same year too, taken after closing and before you spread any new fertilizer, so the tests show what you actually bought. If the year has already passed, do not count on fixing it with an amended return. The election deadline is written into the statute, and whether a missed deduction can be recovered later is a question the IRS has not answered. Talk to your advisor before assuming there is a path back.
These are two different opportunities that often apply to the same farm. Section 180 is about the land you bought and the fertility that came with it. The R&D credit is about the experimenting you do to farm better. Plenty of operations qualify for both, and we cover the credit side in our guide to R&D credits for farmers.
No. Section 180 is a deduction for the residual fertilizer in farmland you bought. The R&D credit is for the experimentation you do on your operation. Many farms qualify for both, but they are separate.
Generally there is no Section 180 deduction in that case, because as the renter you would already have deducted the cost of the inputs you applied.
Yes. The deduction has to be supported by parcel-specific soil tests taken in the year of purchase, after closing and before any new fertilizer goes on. Area-wide fertility data does not meet the bar.
It depends entirely on the soil. On good ground it is often a six-figure deduction, but only to the extent the tests support it. The number comes from the samples, not from a rule of thumb.
This guide is general information, not tax advice. Your situation has its own facts, so talk to a credentialed professional before you act on anything here.