Finance term
Regulation Z (Reg Z)
Also known as: Reg Z
Definition
Regulation Z is the CFPB rule implementing the Truth in Lending Act. It sets standardized disclosure requirements — including APR calculation methodology — for consumer credit products. It does not apply to commercial or business-purpose financing.
Detailed explanation
Regulation Z (codified at 12 CFR Part 1026 — https://www.consumerfinance.gov/rules-policy/regulations/1026/) translates the Truth in Lending Act's statutory requirements into operational rules. It specifies exactly how lenders must calculate APR, what disclosures must appear on credit agreements and periodic statements, when disclosures must be delivered, and how consumers can exercise rescission rights on certain loans.
For business owners, Reg Z is most relevant for understanding what protections don't apply to their business credit products. Personal credit cards, home equity loans, and personal auto loans come with Reg Z's full disclosure regime. Business credit cards, commercial lines of credit, and small-business loans do not — they're exempt under the TILA/Reg Z commercial-purpose exclusion.
This disclosure gap matters when comparing offers. A personal loan from a bank that falls under Reg Z will show a standardized APR that accounts for fees and timing. A business loan might quote rate, factor rate, cents-on-the-dollar, or any number of conventions — and the federal government doesn't require the lender to convert that into a comparable APR. Knowing which disclosure regime applies helps business owners recognize when they need to do the conversion math themselves.
The CFPB's Regulation Z official text and commentary (https://www.consumerfinance.gov/rules-policy/regulations/1026/) is the authoritative source for APR calculation methodology and disclosure requirements. The FDIC's consumer compliance manual (https://www.fdic.gov/regulations/compliance/manual/) includes examination procedures for Reg Z compliance at depository institutions.
◈ Worked example
- Credit card statements must show APR, minimum payment, and how long it takes to pay off carrying only minimums — all Reg Z-mandated disclosures. Business credit cards don't have equivalent federal requirements.
- Mortgage disclosures (Loan Estimate and Closing Disclosure) are driven by Reg Z and RESPA. No equivalent disclosure form exists for commercial real estate loans.
- A payday loan is consumer credit — it must disclose APR under Reg Z, which is why the APR on a 2-week payday loan can appear as 400%+ (the annualized cost of a short-term fee).
Common questions
The most-asked questions about Regulation Z (Reg Z) — answered straightforwardly.
Does Reg Z apply to business credit cards? +
Generally no for small-business credit cards. Business credit cards are exempt from most Reg Z provisions because they're commercial-purpose credit. The CARD Act of 2009 extended some consumer-card protections to business cards with fewer than 100 employees, but the APR disclosure standards of Reg Z still primarily apply to consumer products.
What is the right-of-rescission under Reg Z? +
For certain consumer loans secured by a primary residence (HELOCs, refinances), Reg Z gives the borrower 3 business days after closing to rescind the transaction. This only applies to consumer transactions — not business loans, even if backed by a personal residence used in a business context.
How does Reg Z calculate APR? +
Reg Z requires APR to reflect the total cost of credit over a year, including the stated interest rate plus all mandatory fees divided into the financing amount, expressed as an annualized rate. The goal is a single comparable number across products with different fee structures and payment schedules.
Further reading
This glossary entry is educational content. ClearValue Lending is a business & personal financing platform — not a lender, broker, or financial advisor. Specific product terms vary by lender; verify with the lender or issuer before applying. See privacy policy.