Credit Union Guides

Expert guides on membership, safety, rates, and financial health, backed by NCUA data.

How to Join a Credit Union

Step-by-step guide to finding and joining the right credit union for your needs, including eligibility requirements and the membership process.

Credit Union vs Bank: Which Is Better?

Compare credit unions and banks across rates, fees, services, and FDIC vs NCUSIF insurance. Backed by real rate data.

Understanding Credit Union Health Scores

Learn how PlainCU health scores are calculated from NCUA 5300 Call Report data, net worth ratio, delinquency, ROA, growth, and loan-to-share.

Best Credit Unions for Auto Loans

How to find the lowest auto loan rate at a credit union. What to look for, how to compare, and how to qualify.

Are Credit Unions Safe? NCUSIF Insurance Explained

Everything you need to know about NCUA share insurance, deposit limits, and what happens if a credit union fails.

Methodology

Every PlainCU guide is grounded in the NCUA 5300 Call Report, the quarterly financial disclosure every federally-insured credit union must file with the National Credit Union Administration. We pull the most recently published quarterly dataset (currently Q4 2025), normalize field names to plain English, and derive composite metrics like health score and loan-to-share from the raw reported numbers. Each guide is editorially reviewed by a domain-trained writer who has previously worked on consumer financial education, and every recommendation is checked against the institution's own disclosures before publication. Where supervisory guidance disagrees with industry practice, we follow the regulator's published interpretation rather than third-party commentary.

Guide content is written by the PlainCU editorial team, reviewed against primary source documents including NCUA publications, NCUSIF insurance rules, CFPB consumer guidance, and the Federal Credit Union Act itself. We update whenever the underlying regulatory framework or Call Report field definitions change. Wherever a number appears in a guide, the field is traceable to its specific line on the Call Report or to a public regulator-issued release. We treat the source documents themselves as the authority, not aggregator interpretations, so readers can independently verify every quantitative claim by following the link in the source list below.

Updates land on a quarterly cycle aligned with the NCUA's own publication calendar, which in practice means new figures roll through PlainCU within about sixty days of each quarter close. Historical comparisons reference vintage-tagged snapshots from earlier filings, allowing us to surface trend lines without conflating prior-period numbers with the current snapshot. Where a credit union has merged, been liquidated, or otherwise exited the active list, we tag the change and preserve the historical record so readers researching past performance can still find what they need.

The references below are the principal regulator-published sources we use across the entire guide library. For a single-page deep dive on calculation rules, sample-period selection, and audit procedures, see our standalone methodology page.