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Suitability Check FAQ IRC §453
Structured Installment Sale Resource Center
The definitive educational resource for sellers and advisors
SIS Tools

Move from understanding to analysis.

Begin with a focused Structured Installment Sale estimate, then move into a deeper after-tax comparison when the transaction calls for more detail.

Focused starting pointLive

SIS Calculator

Enter the sale, select a payout design, and see payments, taxable gain, estimated tax, and net proceeds year by year.

Open the calculator →Typical starting time · 2–5 minutes
Advanced planning modelLive

SIS Analyzer

Compare a taxable lump sum, Structured Installment Sale, and optional Deferred Sales Trust with brackets, NIIT, recapture, §453A, and detailed annual schedules.

Open the analyzer →Detailed modeling · 10–20 minutes
Suggested pathStart with the SIS Calculator to understand the payment and tax mechanics. Use the SIS Analyzer when you need a fuller strategy comparison and advisor-level schedules.