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Resource

The TDR Compliance Guide

Everything GSA MAS contractors need to know about Transactional Data Reporting — field requirements, IFF calculation, SRP submission, and what changed in Refresh 31.

Request the Full Guide PDF Updated for Mass Mod A909 · April 2026
Contents

What the guide covers

Chapter 1

TDR Fundamentals

What TDR is, why it replaced the Price Reductions Clause, and what GSA does with the data. Covers the legislative authority, the OIG audit findings, and why 73% of submitted data was unusable.

  • → I-FSS-594 clause requirements
  • → Who must report and when
  • → The 30-day reporting window
  • → What triggers a TDR audit
Chapter 2

The 16 Required Data Fields

A field-by-field breakdown of all 16 TDR data elements — 12 required and 4 optional — for both the Products and Services profiles. Includes accepted formats, common errors, and GSA's validation logic.

  • → Products profile (12 fields)
  • → Services profile (11 fields)
  • → TAA country of origin requirements
  • → Manufacturer Part Number rules
  • → Unit of Measure (UOM) accepted codes
Chapter 3

IFF Calculation & Remittance

The Industrial Funding Fee at 0.75% — how to calculate it correctly, what counts as a qualifying MAS sale, and how to remit quarterly. Includes worked examples for common edge cases.

  • → What qualifies as a TDR-reportable sale
  • → IFF calculation walkthrough
  • → Quarterly remittance via Pay.gov
  • → Handling amendments and corrections
  • → Sales threshold monitoring ($100K/$125K)
Chapter 4

SRP Submission Process

Step-by-step walkthrough of submitting to GSA's Sales Reporting Portal. File format requirements, the pipe-delimited template, common rejection codes, and what to do when SRP rejects your file.

  • → SRP file format specifications
  • → Pipe-delimited template with examples
  • → Common SRP rejection error codes
  • → How to submit an amendment
Chapter 5 — Refresh 31

What Changed With Mass Mod A909

Mass Mod A909 (Refresh 31) is the most significant MAS contract update in a decade. This chapter covers every change that affects TDR reporting, modification procedures, and pricing obligations.

  • → 90-day acceptance window for A909
  • → New TDR field requirements under Refresh 31
  • → EPA documentation changes
  • → OMB M-25-22 AI clause requirements
  • → Enforcement timeline and what happens if you miss it
MAS PILOT
TDR COMPLIANCE GUIDE
2026 EDITION
The Contractor's TDR Compliance Guide
Mass Mod A909 · Refresh 31 · IFF Calculation · SRP Submission
01 — TDR Fundamentals
02 — The 16 Required Fields
03 — IFF Calculation & Remittance
04 — SRP Submission Process
05 — Refresh 31 / Mass Mod A909
42 pages · PDF · Free
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Quick Reference

Critical deadlines & thresholds

Know these. Missing any of them has contract consequences.

30
Days
After month end to submit TDR data to SRP
90
Days — A909
To accept Mass Mod A909 before suspension risk
0.75%
IFF Rate
Of total MAS sales. Calculated monthly, remitted quarterly via Pay.gov
$100K
Min. Sales
Per year (yrs 1–5). $125K each renewal. Below threshold risks non-renewal
TDR Guard

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