IRS guidance taking effect for the 2026 tax season expands Form 1098 reporting requirements for private mortgage note holders. Private lenders and seller-financiers who collect interest from borrowers now face stricter documentation standards, broader definitions of who must file, and increased enforcement. Professional loan servicing is the most direct path to compliance.

The Reporting Gap the IRS Is Closing

Private mortgage notes — seller-financed arrangements where the seller holds a promissory note secured by a deed of trust or mortgage — have long carried inconsistent tax reporting. Section 6050H of the Internal Revenue Code requires any person who receives mortgage interest above the statutory minimum in the course of a trade or business to issue Form 1098, Mortgage Interest Statement, to both the borrower and the IRS. The phrase “in the course of a trade or business” created a compliance gap that the 2026 guidance is designed to eliminate.

Many individual note holders have assumed they fall outside this requirement. That assumption is wrong for anyone holding multiple seller-financed notes or generating material interest income. Discrepancies between what borrowers deduct and what lenders report are precisely what IRS data-matching programs flag — and the 2026 guidance removes the ambiguity that allowed those discrepancies to persist.

Understanding what Form 1098 demands — and how it differs from Form 1099-INT — is the starting point for any private lender. NSC’s detailed breakdown at 1098 vs. 1099-INT: The Private Mortgage Tax Reporting Guide covers the distinction in full.

What the 2026 IRS Guidance Changes

The 2026 guidance targets four specific areas where private mortgage compliance has historically broken down:

• A clearer “trade or business” definition. The IRS is providing concrete criteria that expand who qualifies as a lender for reporting purposes — capturing individual holders of multiple seller-financed notes who have not historically considered themselves subject to Form 1098 obligations.
• Stricter data and documentation standards. Accurate tracking of principal, interest, and loan origination details is required at a level of precision that manual spreadsheets cannot reliably deliver.
• Expanded enforcement. The IRS is deploying data analytics to identify mismatches between borrower deductions and lender filings. Non-filers and incorrect filers face a sharply elevated risk of examination.
• Digital filing expectations. For entities above defined volume thresholds, electronic filing of information returns replaces paper submissions.

Expert Take

The private mortgage sector has operated in a reporting gray zone for years. The IRS identified the mismatch between borrower-claimed deductions and lender-filed information returns as a material compliance risk and has now moved to close it. The 2026 guidance does not create new obligations so much as it removes the ambiguity that allowed inconsistent compliance to persist. Private lenders who have not formalized their Form 1098 processes should treat this as a hard deadline, not a soft advisory.

What Private Note Holders Must Now Do

Compliance under the 2026 framework requires changes at the systems level, not just the annual reporting level. Private note holders must address the following:

• Implement payment-level tracking. Every payment must be split accurately between principal and interest. Amortization schedules must be maintained with precision and updated whenever a modification, payoff, or deferred payment occurs. A sample monthly payment on a private note — say, a fixed payment covering both principal reduction and interest accrual — must be recorded with the exact allocation each month, not estimated at year-end.
• Collect and maintain complete borrower data. Form 1098 requires the borrower’s name, address, taxpayer identification number, and the address of the property securing the loan. Missing data at year-end creates a filing problem that takes months to resolve.
• Establish a Form 1098 generation workflow. IRS issuance deadlines are fixed. Any servicer or note holder without a reliable annual process for generating, reviewing, and distributing Form 1098 statements faces penalty exposure for every non-compliant return. Accurate Form 1098 generation for private mortgage servicers walks through the mechanics in detail.
• Audit existing records now. The window before the 2026 reporting deadline is the time to find and fix gaps — not January. Record-keeping requirements for private mortgage note servicers provides a compliance baseline for every note in your portfolio.

The tax obligations most private lenders miss extend well beyond Form 1098. Seven tax reporting obligations private mortgage lenders overlook covers the full landscape.

Operational and Financial Consequences of Non-Compliance

Non-compliance carries direct financial cost. IRS penalties for failure to file correct information returns scale with the degree of error and whether the failure was intentional. Beyond the penalties themselves, an IRS examination of a private note portfolio consumes significant time and professional fees — costs that consistently exceed what proper servicing would have cost from the start.

For note holders managing portfolios manually, the 2026 guidance creates a decision point: build internal systems capable of meeting these standards, or transfer servicing to a professional who already operates at this level. The second path is faster, less expensive, and eliminates the risk of human error in a process where accuracy is the entire standard.

Private lenders who have not reviewed their compliance posture recently will find the self-audit framework at 7 steps to streamlined compliance: a private lender’s self-audit guide a useful starting point. For the full 2026 compliance checklist, nine compliance checkpoints for private mortgage loan servicers in 2026 maps the requirements in sequence.

Five Actions to Take Before the 2026 Filing Season

1. Audit your current records. Pull every active note and verify that payment history, amortization schedules, and borrower data are complete and accurate. Gaps found now cost far less to fix than gaps found during an IRS examination.
2. Confirm your Form 1098 obligations. Review each note in your portfolio against the IRS criteria for who must file. If there is any question about your obligations, engage a tax professional with private lending experience — not a generalist CPA unfamiliar with seller-financed transactions.
3. Evaluate your servicing technology. Loan servicing software that automates payment allocation, generates accurate amortization schedules, and produces Form 1098 statements is not optional at this compliance level. If your current system cannot reliably do all three, replace it before the 2026 season begins.
4. Consider professional servicing. For lenders holding more than a handful of notes, the compliance infrastructure the 2026 guidance demands is substantial. A professional servicer handles Form 1098 generation, year-end reporting, and IRS compliance as standard functions — not add-ons you configure each January. See essential documents for private lender year-end reporting and IRS compliance for the document baseline a professional servicer maintains on your behalf.
5. Monitor IRS publications directly. Subscribe to IRS e-News for Tax Professionals and check IRS.gov for the formal guidance when it publishes. The effective dates and specific thresholds in the final guidance govern your obligations — not summaries or third-party interpretations.

Frequently Asked Questions

Who is required to file Form 1098 for a private mortgage note?

Any person who receives mortgage interest at or above the statutory reporting threshold in the course of a trade or business must file Form 1098. The 2026 guidance is expected to clarify that holding multiple seller-financed notes qualifies as a trade or business — which means many individual note holders who have not filed previously will be required to start doing so for the 2025 tax year activity they report in early 2026.

What happens if I have been filing Form 1098 inconsistently in prior years?

File correctly going forward and consult a tax professional about prior years. The IRS data-matching program identifies mismatches between borrower deductions and lender filings. Inconsistent prior-year reporting creates compounding risk once the 2026 enforcement focus intensifies — getting current before that deadline is the right move.

Does NSC handle Form 1098 filing on behalf of note holders?

Yes. Form 1098 generation and IRS reporting are core functions of NSC’s private mortgage servicing platform. Every note serviced by NSC receives accurate annual interest statements tracked against verified amortization schedules and filed in compliance with IRS requirements — handled as a standard deliverable, not a year-end scramble.

Note Servicing Center provides the reporting infrastructure the 2026 IRS guidance now demands — from payment-level tracking and amortization accuracy to Form 1098 generation and year-end compliance. Private mortgage lenders who want compliance handled correctly should contact NSC before the 2026 filing season opens, not after.