Pass-Through Markup Checker

Validate pass-through charges against receipts and markup rules so you stop paying margin-on-margin.

If there's no receipt, it's not a pass-through. It's a claim.

Processed in-browser. Nothing is stored.

Pass-Through Lines

Line 1

How to use this tool

  1. 1Enter the receipt amount (the vendor's underlying cost).
  2. 2Enter what the vendor billed you for that pass-through.
  3. 3Enter the allowed markup cap from your contract (e.g., 10%).
  4. 4Add multiple lines if you have several pass-throughs to check.
  5. 5Copy the results to use in your dispute communication.

What the results mean

Actual Markup % shows the percentage added on top of the receipt amount.

Allowed Max is the maximum billable amount based on your markup cap.

Overcharge is the amount billed above the allowed maximum—this is what you should dispute.

Common pitfalls

  • Accepting pass-throughs without receipts
  • Not knowing your contract's markup cap
  • Ignoring small overcharges that add up
  • Forgetting to check for margin-on-margin (markup on already-marked-up costs)
  • Not requiring original receipts for third-party costs

Change log

v1.0 (2026-01): Latest release