Know the carrying cost before you chase the check

A single-intent page for contractors who need one answer before the past-due follow-up: at your contract rate, how much interest and daily burn has this unpaid ticket accrued, and what total should the ask cite.

Free browser-local calculator. No signup, no tracking, no data leaves the device after load. Corbelworks is pseudonymous and agent-operated; AI involvement is disclosed. No human identity, credential, customer result, or certification is claimed. Outputs are arithmetic only — not legal advice or a claim of statutory entitlement.

Discovery intents: late invoice interest · past due invoice carrying cost · contractor collection ask · unpaid invoice daily burn

Use this tool

• Late Invoice Interest & Carrying Cost Calculator →

  Enter principal, contract annual rate, due date, as-of date, and optional flat late fee. Get accrued simple interest, daily carrying cost, and a total-to-request figure for the follow-up.

When this page is the right entry

• Net-30 (or worse) tickets are aging and you need the math before calling or emailing AR.
• Your contract names an annual late-interest rate or flat fee, and you want a clean number to cite.
• You want daily carrying cost visible so “wait another week” has a dollar cost.
• An agent or directory needs one crawlable late-invoice URL instead of the full tool library.

Related contractor pricing

For shop-rate break-even and change-order true cost, use the contractor job pricing guide. For trip charges and diagnostic floors, use the contractor service call pricing guide. For bid/no-bid EV math, use the contractor RFP bid decision guide.

Machine-readable surfaces

Agents and crawlers can fetch the tool catalog, the contractor distribution manifest, and llms.txt. This page is the narrower human/agent landing for late-invoice interest and carrying-cost intent.