To amortize business loan fees, you spread the cost over the life of the loan rather than deducting it in the year you paid. How you do that depends on who received the money. Fees paid to the lender — origination fees, points, underwriting charges — are treated as original issue discount and deducted as interest over the loan term using the constant-yield method. Fees paid to third parties like attorneys, appraisers, or title companies are capitalized as costs of facilitating the borrowing and written off straight-line over the same period. Either way, the deduction rarely lands all in year one.
Who Got the Money Decides the Method
The first question is always the same: did this fee go to the lender, or to someone else involved in closing? Treasury Regulation 1.263(a)-5 defines a borrowing as a transaction whose facilitative costs must be capitalized, and the regulation reaches any issuance of debt, including refinancings.1eCFR. 26 CFR 1.263(a)-5 – Amounts Paid or Incurred to Facilitate an Acquisition of a Trade or Business But the mechanism for recovering those costs splits based on the recipient.
Origination fees, underwriting charges, processing fees, and points paid directly to the lender reduce the “issue price” of the loan and become original issue discount. Attorney fees, recording fees, title searches, and appraisals ordered as a condition of closing are capitalized as facilitative costs. Internal costs — the hours your own staff spent pulling documents — are not treated as facilitative and stay in ordinary operating expense.
Lender Fees: Original Issue Discount
When you pay an upfront fee directly to your lender, Regulation 1.1273-2(g)(2) treats you as having received less cash than the face amount of the loan.2eCFR. 26 CFR 1.1273-2 – Determination of Issue Price and Issue Date The gap between what hit your account and what you owe at maturity is original issue discount. OID is the excess of the stated redemption price at maturity over the issue price.3Office of the Law Revision Counsel. 26 USC 1273 – Determination of Amount of Original Issue Discount
Because OID is interest, you deduct it under Section 163(a) over the loan term.4Office of the Law Revision Counsel. 26 USC 163 – Interest The default method is the constant-yield method described in Regulation 1.163-7.5eCFR. 26 CFR 1.163-7 – Deduction for OID on Certain Debt Instruments Constant-yield gives you slightly less deduction in the early years and more in the later years than a flat straight-line split, because it mirrors how the debt actually compounds. On a $500,000 loan with a $5,000 origination fee and a five-year term, your annual OID deduction varies year to year rather than sitting at a flat $1,000.
When You Can Use Straight-Line Instead
If your total OID is small enough, you can skip the constant-yield math. OID is de minimis when it is less than 0.25 percent of the stated redemption price at maturity times the number of complete years to maturity. On a $500,000 five-year loan, the threshold is $6,250 (0.0025 × $500,000 × 5). A $5,000 fee is under that ceiling, so the OID is de minimis.
Regulation 1.163-7(b)(2) then gives you three choices for de minimis OID: deduct it at maturity, spread it straight-line over the loan term, or allocate it in proportion to stated interest payments.5eCFR. 26 CFR 1.163-7 – Deduction for OID on Certain Debt Instruments You lock the choice in by reporting consistently on the return for the year the debt is issued. Most borrowers pick straight-line: the math is trivial and the annual deductions are level.
Third-Party Fees: Capitalize and Amortize
Amounts paid to outsiders to close the loan — legal fees, recording charges, title work, appraisals — are not OID. They are capitalized under Regulation 1.263(a)-5 and amortized ratably over the loan term, generally on a straight-line basis.1eCFR. 26 CFR 1.263(a)-5 – Amounts Paid or Incurred to Facilitate an Acquisition of a Trade or Business
Say you pay $3,000 in legal fees and $1,200 in recording costs to close a seven-year term loan. The combined $4,200 is deducted at $600 per year, prorated in the first and last years by the number of days the loan was outstanding.
There is one shortcut. Regulation 1.263(a)-5(d)(3) treats third-party facilitative costs as immediately deductible if the total for a single borrowing does not exceed $5,000.1eCFR. 26 CFR 1.263(a)-5 – Amounts Paid or Incurred to Facilitate an Acquisition of a Trade or Business Cross that threshold and the entire amount must be capitalized, not just the excess. It is an all-or-nothing test, so keeping a running total during closing pays off.
Short-Term Loans and the 12-Month Rule
Not every loan runs long enough to require amortization. Regulation 1.263(a)-4(f) says you do not have to capitalize an amount paid to create a right or benefit that does not extend beyond the earlier of 12 months after you first realize the benefit, or the end of the taxable year following the year of payment.6eCFR. 26 CFR 1.263(a)-4 – Amounts Paid to Acquire or Create Intangibles
A fee paid to close a nine-month working capital loan clearly qualifies. But watch the second prong. A fee paid in December 2026 for an 11-month loan maturing in November 2027 clears the 12-month test, and because the benefit does not extend past December 31, 2027, capitalization is not required. Shift that same loan a month later, and the calendar-year rule can pull it back into capitalization territory. The rule applies to third-party facilitative costs; lender fees follow the OID rules regardless of term, though on a very short loan the practical result is similar.
Commitment Fees on Credit Lines
Commitment fees pay for the right to borrow later, not for money in hand today, so they follow a different track. Under Revenue Ruling 81-160, a commitment fee that operates as a standby charge is treated as the cost of acquiring an option. Draw on the facility, and the fee is added to the loan and amortized over its term. Let the commitment expire without drawing, and you may claim a loss deduction under Section 165.
The IRS has taken a friendlier position on some revolving credit fees, allowing them as ordinary and necessary business expenses under Section 162 where the fee pays for the ongoing availability of funds rather than the acquisition of an intangible right. The line depends on the specific fee structure in your loan documents.
Paying Off Early or Refinancing
Pay a loan off before maturity and the unamortized balance accelerates. Regulation 1.163-7(c) treats the excess of the retirement price over the adjusted issue price as interest deductible in the year of repurchase.5eCFR. 26 CFR 1.163-7 – Deduction for OID on Certain Debt Instruments A business that paid a $5,000 origination fee on a five-year loan and paid it off after three years deducts whatever OID remained on the books that year.
Refinancing is where borrowers lose the acceleration. If the refinancing is a debt-for-debt exchange with the same lender, any unamortized OID from the old loan does not get deducted in the year of the exchange. It rolls into the OID on the new loan and stretches over the new term.5eCFR. 26 CFR 1.163-7 – Deduction for OID on Certain Debt Instruments To claim the accelerated deduction you have to show a genuine termination of the old debt, not a modification dressed up as a payoff. Whether a change to loan terms crosses the line into a new instrument is governed by Regulation 1.1001-3 and turns on quantitative tests that are worth a separate look before you assume you can write off the old balance.
How to Report It on the Return
In the first year you begin amortizing loan costs, report the deduction on Form 4562, Part VI. Enter a description of the costs, the date amortization begins, the total amortizable amount, the applicable Code section, the amortization period, and the current-year deduction.7Internal Revenue Service. Instructions for Form 4562
In later years, if you are not otherwise required to file Form 4562 because no new depreciation or amortization started, you can report the ongoing amortization on the “Other Deductions” or “Other Expenses” line of your return. Sole proprietors use line 27b of Schedule C. Corporations report on Form 1120. Either way, hold onto a schedule showing the original amount, the period, accumulated amortization, and the current-year deduction. The IRS expects that backup even when Form 4562 is not required.
One Rule That Does Not Cross Over
Section 461(g)(2) lets homeowners deduct points on a mortgage to buy or improve a principal residence in the year paid, provided the practice is customary in the area and the amount is typical.8Office of the Law Revision Counsel. 26 USC 461 – General Rule for Taxable Year of Deduction That shortcut does not exist for business borrowing. Points on a commercial loan amortize under the OID rules described above, no exceptions.
What Happens If You Deduct It All at Once
Writing off the full fee in year one overstates the current deduction and understates income in every year after. If the resulting understatement is substantial, Section 6662 imposes a 20 percent accuracy-related penalty on the underpayment.9Office of the Law Revision Counsel. 26 USC 6662 – Imposition of Accuracy-Related Penalty on Underpayments
For individuals, a substantial understatement is one that exceeds the greater of 10 percent of the correct tax or $5,000. For C corporations other than S corporations and personal holding companies, the threshold is the lesser of 10 percent of the correct tax (but not less than $10,000) or $10,000,000.9Office of the Law Revision Counsel. 26 USC 6662 – Imposition of Accuracy-Related Penalty on Underpayments A single mischaracterized loan fee will not always trigger the penalty on its own, especially for larger companies, but smaller businesses can cross the line quickly, and the risk compounds if the same error repeats across multiple loans or years. The penalty can be waived on a showing of reasonable cause and good-faith reliance on professional advice, but the safer move is to sort the classification before you file: identify who received each fee, apply the OID or facilitative-cost treatment, and set up the amortization schedule from the closing statement.