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Regulation C is the federal regulation implementing the Home Mortgage Disclosure Act (HMDA) of 1975, requiring covered financial institutions to collect, record, and report loan-level data on residential mortgage applications and originations. As described on official Consumer Financial Protection Bureau (CFPB) pages on November 8, 2026, it provides empirical data for monitoring housing credit allocation and fair lending compliance.
What it is and who runs it
Regulation C is codified at 12 CFR Part 1003 under HMDA (12 U.S.C. 2801 et seq.). Originally administered by the Federal Reserve Board, rulemaking and administrative authority transferred to the CFPB under Title X of the Dodd-Frank Act in 2011. Supervisory intake is coordinated through the Federal Financial Institutions Examination Council (FFIEC), with approved OMB control numbers across the CFPB (3170-0008), OCC (1557-0159), FDIC (3064-0046), Federal Reserve (7100-0247), HUD (2502-0529), and NCUA (3133-0166).
Section 1003.1(b) establishes a tripartite purpose: (1) determining whether financial institutions meet community housing needs; (2) assisting public officials in targeting public investment to leverage private capital; and (3) identifying potential discriminatory lending patterns. In spatial science and urban planning, geocoded HMDA data allows researchers to evaluate credit disparities, redlining, and reinvestment by linking loan records with demographic data through citing census demographic data.
Eligibility (summary, with the official source)
Coverage is defined in 12 CFR § 1003.2(g), separating entities into depository and nondepository institutions based on asset thresholds, Metropolitan Statistical Area (MSA) offices, and loan volumes, as described on the official CFPB regulations page on November 8, 2026:
| Institution Type | Coverage Criteria (12 CFR § 1003.2(g)) | Volume Thresholds | Exemption Scope |
|---|---|---|---|
| Depository Institutions (Banks, Credit Unions) | Assets exceed CPI-W threshold on Dec 31; branch in MSA; originated 1+ first-lien home loan in prior year; federally insured or backed. | Prior 2 years: 25+ closed-end loans, OR 200+ open-end credit lines each year. | Assets at/below threshold, or below loan volume minimums (§ 1003.2(g)(1)). |
| Nondepository Lenders (Mortgage Companies) | For-profit mortgage lender; maintains home or branch office in an MSA on Dec 31. | Prior 2 years: 25+ closed-end loans, OR 200+ open-end credit lines each year. | No office in an MSA, or below loan volume minimums (§ 1003.2(g)(2)). |
| Partially Exempt Entities (EGRRCPA § 1003.3(d)) | Insured depositories and credit unions with CRA rating of “Satisfactory” or “Outstanding”. | Originated under 500 closed-end loans (or under 500 open-end lines) in prior 2 years. | Exempt from 26 expanded Dodd-Frank fields; must report 22 core fields. |
The 25 closed-end loan threshold was reinstated following a September 2022 federal court order vacating an administrative rule that had raised the threshold to 100 loans, maintaining small-lender coverage.
What it funds or requires
Regulation C is a regulatory reporting mandate; it does not disburse grant funding. Instead, 12 CFR § 1003.4 requires covered lenders to maintain an electronic Loan Application Register (LAR) capturing more than 48 data points across five categories:
- Application & Loan Features: Universal Loan Identifier (ULI, 45 characters with check digit), application date, loan type, purpose, occupancy, and loan amount.
- Action & Disposition: Action taken (originated, approved not accepted, denied, withdrawn, closed for incompleteness, purchased) and action taken date.
- Property Geography: State, county, and 11-digit census tract, enabling spatial data analysis of neighborhood mortgage flows.
- Applicant Demographics: Disaggregated ethnicity, race, sex, age, and gross annual income relied upon in credit underwriting.
- Pricing & Underwriting Metrics: Interest rate, rate spread over Average Prime Offer Rate (APOR), loan costs, debt-to-income (DTI) ratio, combined loan-to-value (CLTV) ratio, credit scores, and denial reasons.
Lenders utilize regulatory compliance software to automate LAR extraction, aligning datasets with FAIR data principles for auditability.
Application or compliance steps
Lenders maintain compliance through six operational stages defined in official CFPB HMDA filing manuals as of November 8, 2026:
- Coverage Assessment: Review year-end assets, branch locations, and trailing two-year origination volumes to confirm institutional coverage and EGRRCPA partial exemption eligibility under § 1003.3(d).
- Quarterly LAR Recording: Under § 1003.4(f), record reportable transactions on the LAR within thirty calendar days following the conclusion of each calendar quarter.
- Geocoding Validation: Process property addresses through tools like the FFIEC Geocoding System to verify 11-digit census tract identifiers for dwelling locations.
- Edit Check Auditing: Execute automated syntactical, validity, and quality edit checks through CFPB validation software to correct formatting errors and outliers.
- Electronic Submission and Certification: Upload the validated LAR via the CFPB/FFIEC HMDA Platform by March 1 following the collection year. An authorized corporate officer must certify data accuracy (§ 1003.5(a)(1)(i)).
- Public Disclosure & Retention: Retain completed LAR files for at least three years, and maintain written lobby notices directing public inquiries to the CFPB disclosure portal (§ 1003.5(b)-(e)).
Typical timeline phases (no calendar dates as facts)
The Regulation C compliance cycle follows five successive operational phases across each annual reporting period:
| Operational Phase | Regulatory Timing Window | Key Compliance Activities |
|---|---|---|
| Phase 1: Quarterly Recording | Within 30 calendar days following quarter end | Extract loan data into LAR files; log action dates, demographics, and denial codes (§ 1003.4(f)). |
| Phase 2: Annual Audit | First two months following collection year end | Reconcile annual LAR against general ledger originations; validate geocodes; resolve edit warnings. |
| Phase 3: Annual Submission | On or before March 1 following collection year | Submit encrypted LAR via CFPB HMDA Platform; complete authorized executive officer legal certification (§ 1003.5(a)(1)(i)). |
| Phase 4: High-Volume Reporting | Within 60 calendar days after Q1, Q2, and Q3 ends | Mandatory for lenders with 60,000+ covered applications and loans in preceding year (§ 1003.5(a)(1)(ii)). |
| Phase 5: Public Release & Archive | Subsequent months across retention period | Monitor modified LAR publication; maintain notices; archive datasets for 3+ years under research data governance protocols. |
Common mistakes
Supervisory examination manuals from the CFPB and FDIC identify several recurring compliance mistakes:
- Geocoding Postal Code Errors: Assigning census tracts based on postal zip codes rather than physical property coordinates, causing spatial misclassifications.
- ULI Check-Digit Inaccuracies: Generating invalid Universal Loan Identifiers by misapplying the Mod 97-10 check-digit algorithm or duplicating loan numbers.
- Misapplying EGRRCPA Relief: Claiming partial exemptions without confirming a “Satisfactory” or “Outstanding” CRA rating, or omitting required core fields.
- Rate Spread Calculation Errors: Misidentifying the interest-rate lock date when calculating APR differentials against the APOR benchmark.
- Denial Reason Omissions: Failing to report principal denial reasons for rejected applications when required by supervisory agency rules.
- Improper “Not Applicable” Coding: Marking demographic fields as “NA” for in-person applications where lenders were required to record ethnicity, race, and sex via visual observation.
Related programs (table)
Regulation C operates alongside companion federal fair lending, consumer protection, and housing statutes:
| Regulatory Framework | Enforcing Agencies | Statutory Objective | Distinction from Regulation C |
|---|---|---|---|
| Regulation C (HMDA) 12 CFR Part 1003 |
CFPB / FFIEC Agencies | Collects and discloses loan-level mortgage data across census tracts. | Reporting mandate creating public transparency datasets without setting underwriting rules. |
| Regulation B (ECOA) 12 CFR Part 1002 |
CFPB / FTC / Regulators | Prohibits discrimination across all consumer and commercial credit transactions. | Substantive anti-discrimination law governing adverse action notices and credit terms. |
| Community Reinvestment Act (CRA) 12 CFR Parts 25, 228 |
OCC, Federal Reserve, FDIC | Encourages banks to meet community credit needs in their local assessment areas. | Performance evaluation system that evaluates bank lending records using HMDA data. |
| Fair Housing Act (FHA) Title VIII, 42 U.S.C. 3601 |
HUD / Department of Justice | Prohibits discrimination in the sale, rental, and financing of residential dwellings. | Civil rights statute providing judicial remedies, utilizing HMDA data in disparate impact cases. |
FAQ
What is Regulation C and what law does it implement?
Regulation C is codified at 12 CFR Part 1003 and implements the Home Mortgage Disclosure Act of 1975. Administered by the CFPB, it requires mortgage lenders to record and disclose loan-level application and origination records to monitor credit access and fair lending compliance.
Which financial institutions are exempt from Regulation C reporting?
Institutions are exempt if below the depository asset threshold, lacking an MSA office, or originating under 25 closed-end loans (or 200 open-end credit lines) in either prior year.
How does the EGRRCPA partial exemption work under Regulation C?
Under § 1003.3(d), depositories originating under 500 loans (or open-end lines) in each prior year with a CRA rating of “Satisfactory” or better are exempt from 26 expanded fields, reporting 22 core fields.
What is the difference between Regulation C and Regulation B?
Regulation C is a mortgage data disclosure rule. Regulation B implements the Equal Credit Opportunity Act, establishing anti-discrimination rules and adverse action notices across all credit products.
How do researchers in geography and urban planning use Regulation C data?
Researchers use geocoded HMDA data to evaluate spatial credit allocation, track neighborhood redlining, analyze racial disparities in mortgage pricing, and assess community reinvestment in lower-income census tracts.
What are the consequences of non-compliance with Regulation C?
Under 12 CFR § 1003.6, violations subject lenders to administrative sanctions, mandatory independent audits, file resubmissions, and civil money penalties from regulatory enforcement agencies.
Sources
- Consumer Financial Protection Bureau. “12 CFR Part 1003 — Home Mortgage Disclosure (Regulation C).” Electronic Code of Federal Regulations. Accessed November 8, 2026. https://www.consumerfinance.gov/rules-policy/regulations/1003/
- Legal Information Institute, Cornell Law School. “12 CFR Part 1003 — Home Mortgage Disclosure (Regulation C).” Accessed November 8, 2026. https://www.law.cornell.edu/cfr/text/12/part-1003
- Consumer Financial Protection Bureau. “Home Mortgage Disclosure Reporting Requirements (HMDA).” Compliance Resources. Accessed November 8, 2026. https://www.consumerfinance.gov/compliance/compliance-resources/mortgage-resources/hmda-reporting-requirements/
- Consumer Financial Protection Bureau. “Reportable HMDA Data: A Regulatory and Reporting Overview Reference Chart.” Published October 2024. Accessed November 8, 2026. https://files.consumerfinance.gov/f/documents/cfpb_reportable-hmda-data_regulatory-and-reporting-overview-reference-chart_2024-10.pdf
