Invoice Late-fee Schedule Builder

Audit one explicit interpretation of user-entered contract terms and payment timing.

Contract arithmetic only: this tool does not invent statutory caps or provide legality, tax, accounting, collection, or enforcement guidance. Its result is a modeled total under selected assumptions, never an “amount owed.” Review the governing agreement and qualified advice. Different plausible timing, allocation, rate-basis, and rounding interpretations can produce different results.

Invoice and selected interpretation

Scenario name

Currency label

Invoice principal

Due date

Calculation cutoff

Grace days after due date

Fee method

Flat amount or rate (%)

Fee balance basis

Include prior fees in fee basis

Annual day-count denominator

Periodic interval days

First periodic charge

Payment allocation

Same-day ordering

Rounding

Add payment or credit

Stable ID

Description

Date

Positive amount

Type

Modeled schedule

Date / event	Opening principal	Opening fees	Fee basis / rate / days	Charge	Payment / credit	Ending principal	Ending fees	Modeled total

Interpretation comparison (maximum 8)

Scenario	Method	Modeled fees	Modeled total	Difference from baseline