Late-fee structures on seller-carry notes run as either a flat dollar amount or a percentage of the installment. Each structure interacts differently with state caps, federal Section 32 restrictions, and the §1026.41 disclosure requirements. The comparison below walks the trade-offs.

How the flat-fee structure works

A flat-fee structure sets a fixed dollar amount per late installment regardless of the installment size. The note language recites the fee in dollars, the billing engine applies the flat amount on grace-period expiration, and the sub-ledger entry runs against the fixed dollar figure. The flat fee runs the same across the life of the loan as the principal amortizes.

How the percentage structure works

A percentage structure sets the fee as a stated percentage of the late installment. The note language recites the percentage, the billing engine multiplies the late installment against the percentage, and the sub-ledger entry runs against the calculated figure. The fee scales with the installment size and runs higher in the early years of an amortizing loan and lower in the late years.

How the state cap interacts with each structure

State statutes specify the cap on the late fee as a percentage of the installment, a dollar figure, or the lower of the two. California Civil Code §2954.4 specifies both a percentage and a dollar floor on residential 1-4 family mortgages. New York General Obligations Law §5-501 and the Department of Financial Services rules specify the New York framework. The note structure runs against the state cap in its own terms — a flat-fee note runs against the dollar cap, a percentage note runs against the percentage cap.

How Section 32 interacts with each structure

12 C.F.R. §1026.32(d)(7) caps the late fee on a high-cost mortgage as a percentage of the past-due payment. The federal cap converts a flat-fee note into a hybrid — the flat fee runs against the federal percentage cap on each installment, and the binding fee falls to the lower of the two. A Section 32 owner-occupied carry on a flat-fee note requires running both calculations every billing cycle.

How the §1026.41 disclosure handles each structure

The §1026.41 periodic statement breaks out the late fee on a separate line in both structures. The disclosure mechanics run the same across flat and percentage — the fee accrued in the period, the cumulative late-fee balance, and the application of the borrower’s payment against the prior balance. The disclosure transparency runs identically in both structures.

How the liquidated-damages test handles each structure

Common-law contract doctrine treats both structures as liquidated damages. The reasonableness test runs against the holder’s reasonable cost of borrower delinquency at the contract stage. A flat fee that exceeds the reasonable cost fails the test; a percentage fee that produces an above-cost result on a large installment fails the test. The state common law sets the line in each jurisdiction.

Which structure produces a cleaner audit trail?

The flat-fee structure produces a simpler audit trail because the dollar figure is constant. The §1024.35 dispute response, the §1024.38 record retention, and the state servicer audit run against a single fixed figure across the loan history. The percentage structure produces a higher-variance audit trail because the fee runs against each individual installment.

Which structure produces a cleaner usury defense?

Neither structure produces a stronger defense in principle — usury reclassification runs against the aggregate effective interest figure regardless of the late-fee structure. The flat-fee figure aggregates the same way as the percentage figure across the late-payment history. The defense runs on the state cap compliance, not the structure choice.

The recommended discipline

The discipline runs the same in both structures. Read the state cap against the note language at the closing table. Identify the Section 32 status. Document the binding fee parameters. Run the monthly accrual on the documented parameters. Disclose the fee on the §1026.41 statement breakout. Respond to borrower disputes inside the §1024.35 window. The structure choice runs second to the discipline choice.

Frequently Asked Questions

Which structure is more common on seller carries?

The percentage structure runs more common on seller carries because the standard note forms recite the late fee as a percentage of the installment. Custom drafts sometimes specify a flat fee for simplicity.

Does the structure affect the borrower-dispute risk?

The dispute risk runs against the cap compliance and the disclosure discipline rather than the structure. A flat-fee note with a clean closing-table review and a clean §1026.41 disclosure runs lower dispute risk than a percentage note with neither discipline.

Can the holder change the structure mid-loan?

No. The late-fee structure is set by the note language. A structure change requires a contractual amendment with the borrower’s signature, and the amendment runs against the original loan terms and the state usury framework.

This article is educational and does not constitute legal advice. Late-fee charges on a seller-carry note involve federal Truth in Lending Act and Regulation Z requirements, state usury and late-charge statutes, and common-law liquidated-damages doctrine that vary by jurisdiction. Consult qualified legal counsel on the late-fee requirements that apply to any specific seller-carry note.

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