Category: Money Basics

A credit union is a not-for-profit financial cooperative owned by the people who keep money in it, and joining usually takes one small deposit plus proof that you fit its membership rules. This explainer covers what a credit union is, who qualifies, what membership actually costs, the loan rate caps that make credit unions cheaper than many lenders, and the federal laws that protect you once you are a member.

What a credit union is

The credit union definition in federal law is a cooperative association organized to promote thrift among its members and create a source of credit for provident purposes. That language comes from the Federal Credit Union Act, passed in 1934 and still the governing statute for every federally chartered credit union.

In plain words, a credit union is a bank-like institution that its customers own. When you join, you buy one share, usually priced between $5 and $25, and that share makes you a part owner with one vote at the annual meeting. There are no outside shareholders. Any surplus goes back to members as lower loan rates, higher savings yields, fewer fees, or occasional bonus dividends.

Credit unions offer most of what a bank does: checking (called a share draft account), savings (a share account), certificates (the credit union version of a CD), credit cards, auto loans, mortgages, personal loans and mobile banking. Many smaller ones also offer services banks rarely bother with, such as free financial counseling or small emergency loans.

The National Credit Union Administration (NCUA) charters and supervises federal credit unions. State-chartered credit unions answer to their state regulator, and nearly all of them also carry NCUA insurance. NCUA data shows roughly 4,400 federally insured credit unions serving more than 140 million members as of 2025.

Credit union vs bank: the differences that matter

Feature	Credit union	Bank
Who owns it	Members	Shareholders
Profit goal	Return value to members	Return profit to investors
Who can use it	People who meet eligibility rules	Anyone
Deposit insurance	NCUSIF, up to $250,000	FDIC, up to $250,000
Federal cap on loan rates	18% APR for federal credit unions	No federal cap for most loans
Federal income tax	Exempt	Taxed
Primary regulator	NCUA or state regulator	OCC, FDIC, Federal Reserve or state

The tax exemption is real, and it is why credit unions can run thinner margins. Federal credit unions are exempt under Internal Revenue Code section 501(c)(1), and state-chartered ones under section 501(c)(14). The trade-off is that credit unions must restrict who can join, which brings us to eligibility.

Who can join: the field of membership

Every credit union has a “field of membership,” a set of rules approved by its regulator that says who is eligible. The Federal Credit Union Act allows three basic types.

Single common bond. One employer, one union, one church, one association. The classic example is a credit union that serves employees of a hospital or a school district.

Multiple common bond. Several unrelated groups under one roof. A credit union might serve employees of 300 different companies plus members of a dozen associations.

Community. Anyone who lives, works, worships or attends school in a defined geographic area, often a county or a metro region. These are the easiest to qualify for if you live in the right place.

Most credit unions also extend eligibility to the family of a member. “Family” is usually defined broadly to include spouses, parents, children, siblings, grandparents, grandchildren and anyone living in the member’s household. If your sister belongs, you likely qualify too.

The association route

Here is the part many people miss. A large share of credit unions include one or more associations in their field of membership, and some of those associations exist mainly so people can join. You pay a one-time membership fee or donation, often $5 to $20, to a nonprofit the credit union partners with, and that makes you eligible. The credit union will tell you on its eligibility page which associations count. Check the fee before you commit; you are paying it on top of the share deposit.

Once a member, always a member

Most federal credit unions adopt a bylaw provision that keeps you eligible even after you leave the employer, move out of the area or drop the association. As long as you keep your share account open with the minimum balance, your credit union membership continues for life. Ask about this before you join if you expect to move.

How to become a member

Joining is a short process, usually online, that takes about 15 minutes.

Two things to know before step four. First, the share deposit is yours, but it usually has to stay in the account to keep your membership active. Second, many credit unions screen new members through ChexSystems or Early Warning Services, the same consumer reporting agencies banks use. Under the Fair Credit Reporting Act you can request a free copy of your ChexSystems report and dispute errors, which matters if a past overdraft is blocking you. Some credit unions offer a “second chance” checking account for people with a rough ChexSystems history.

What membership costs

The honest answer: usually almost nothing. The share deposit is refundable when you close the account. Monthly fees on basic checking are often zero, and when they exist they tend to be lower than at large banks. Where credit unions really separate from other lenders is on loan pricing, because of two federal caps.

The Federal Credit Union Act sets a 15% ceiling on loan rates but lets the NCUA board raise it temporarily. The board has held the ceiling at 18% APR since 1987, renewing it in 18-month blocks. That cap applies to credit cards, personal loans and nearly every other loan a federal credit union makes. State-chartered credit unions follow their own state’s usury laws instead, which are often similar or stricter.

The second cap covers Payday Alternative Loans, or PALs, which the NCUA created so members have a cheaper substitute for a payday loan. Under 12 CFR 701.21(c)(7), a PAL I is $200 to $1,000 with a one to six month term, and a PAL II is up to $2,000 with a one to twelve month term. Both carry a maximum APR of 28% and an application fee of no more than $20. PAL I requires one month of membership first; PAL II does not.

A worked example: PAL vs payday loan

Product	Amount	Fee or APR	Term	Total repaid
Credit union PAL	$500	28% APR plus $20 fee	6 monthly payments	About $562
Storefront payday loan	$500	$15 per $100 borrowed (about 391% APR)	14 days	$575
Credit union personal loan	$1,000	18% APR	12 monthly payments	About $1,100

Here is the math in plain words. At 28% APR, the monthly rate is 28 divided by 12, or about 2.33%. A $500 loan paid over six months works out to roughly $90 a month, so you pay around $42 in interest, plus the $20 fee, for a total near $562. The payday loan costs $75 for two weeks, which sounds smaller, but a $75 charge on $500 for 14 days is a 391% annual rate. If you roll it over twice, you have paid $225 in fees and still owe the original $500.

A credit union credit card at the 18% cap compares the same way. If you want to see how that rate turns into a monthly charge, “credit card apr explained” walks through the daily interest math.

Credit unions for military members

Service members, veterans and their families have some of the largest fields of membership in the country open to them. Navy Federal Credit Union, the biggest credit union in the US by assets, serves active duty, reserve and retired members of every branch, Department of Defense and Coast Guard civilians, veterans, and their family and household members. Pentagon Federal Credit Union opens its doors to anyone who makes a small savings deposit, so military affiliation is not required. Service Credit Union, Andrews Federal Credit Union and Security Service Federal Credit Union also serve military communities and typically have branches on or near bases.

A note on USAA: it is a bank and insurer, not a credit union, though it serves a similar population.

Two federal laws add protection for military borrowers at any lender, credit unions included. The Military Lending Act caps the Military Annual Percentage Rate at 36% on most consumer credit extended to active duty service members and their dependents, and it bans mandatory arbitration on those loans. The Servicemembers Civil Relief Act caps interest at 6% on debts you took on before entering active duty, once you give the lender written notice and a copy of your orders.

State availability and insurance

Credit unions exist in every state and the District of Columbia, but the specific one you want may not serve your area. Community charters are geographic, so a credit union in Ohio generally cannot take a member in Texas unless that person qualifies through an employer, an association or a family tie.

Insurance is the other state wrinkle. Every federal credit union is insured by the National Credit Union Share Insurance Fund, which covers up to $250,000 per member, per credit union, per ownership category, backed by the full faith and credit of the United States. Most state-chartered credit unions carry the same NCUA insurance. A small number of state credit unions in a handful of states are privately insured instead, with no federal backing. Those credit unions must disclose this at the branch and on their website under federal rules. Before you deposit, confirm NCUA coverage using the NCUA’s Research a Credit Union tool.

Your rights as a credit union member

Credit unions follow nearly the same consumer protection rules as banks.

• Truth in Lending Act and Regulation Z (12 CFR 1026) require clear disclosure of the APR, finance charge and payment schedule on every loan and credit card.
• Truth in Savings Act, applied to credit unions through NCUA regulation 12 CFR Part 707, requires disclosure of dividend rates, fees and minimum balances on share accounts.
• Electronic Fund Transfer Act and Regulation E limit your liability for unauthorized debit card and electronic transactions when you report them promptly, and give you dispute rights.
• Equal Credit Opportunity Act bars the credit union from denying you a loan based on race, sex, religion, national origin, age, marital status or receipt of public assistance.
• Fair Credit Reporting Act governs how the credit union reports your accounts to credit bureaus and gives you the right to dispute errors.
• Fair Debt Collection Practices Act does not usually cover the credit union collecting its own loans, but it does apply to any third-party debt collector the credit union hires.

You also hold governance rights no bank customer has: one vote per member for the board of directors, the right to attend the annual meeting, and the right to nominate candidates.

Where to complain

For a federal credit union with under $10 billion in assets, file with the NCUA Consumer Assistance Center. Credit unions above $10 billion are supervised by the Consumer Financial Protection Bureau, which takes complaints about any credit union through its complaint portal. State-chartered credit unions answer first to the state regulator that chartered them. Suspected fraud goes to the FTC at ReportFraud and, for online scams, the FBI’s IC3.

FAQ

Can anyone join a credit union?

Almost everyone can join some credit union, but not every credit union. Between community charters, family eligibility and association-based routes, most people can find at least one they qualify for. The restriction is on which credit union, never on whether you qualify for any.

Is my money safe in a credit union?

Yes, if the credit union is federally insured. The NCUSIF protects up to $250,000 per member per ownership category, the same level as FDIC coverage at a bank. Verify coverage on the NCUA website before you deposit.

Does joining a credit union affect my credit score?

Opening a share account does not involve a credit inquiry at most credit unions. Applying for a loan or credit card triggers a hard inquiry just as it would anywhere else.

What does credit union membership cost per year?

Usually nothing beyond the one-time share deposit, which stays in your account and is returned if you close it. Some accounts carry monthly fees if you fall below a minimum balance, so read the fee schedule the credit union must give you under Truth in Savings rules.

Can I keep my membership if I change jobs?

At most credit unions, yes. The common “once a member, always a member” bylaw keeps your membership active as long as your share account stays open with the minimum balance.

Credit card APR, short for annual percentage rate, is the yearly interest rate your card issuer charges on any balance you do not pay off by the due date. Issuers apply it as a tiny daily rate, so a 24.99% APR works out to about 0.068% of your balance every day, and that adds up to roughly $20 a month on a $1,000 balance. Pay the full statement balance on time and the purchase APR never touches you at all.

What credit card APR actually means

APR is the number lenders must show you under the Truth in Lending Act and its implementing rule, Regulation Z (12 CFR 1026). It is written as a yearly figure so you can compare cards, but your issuer never charges it once a year.

Instead, the issuer divides the APR by 365 to get a daily periodic rate. That daily rate is applied to your balance every day of the billing cycle, and the results are added up on your statement as the finance charge.

For a credit card, APR and the interest rate are the same thing. That is different from a mortgage or a car loan, where the APR includes closing costs and fees on top of the interest rate. A card’s annual fee, late fee or foreign transaction fee is charged separately and is not folded into the APR.

Most card APRs are also variable. Your rate is built from an index, almost always the U.S. prime rate, plus a fixed margin the issuer sets based on your credit. The prime rate moves with the Federal Reserve’s target rate, so when the Fed raises or cuts rates, your card APR follows within a billing cycle or two.

The different APRs on one card

A single card usually carries four or five separate rates. The cardholder agreement lists them in a federally required table often called the Schumer box, and each one applies to a different kind of balance.

Type of APR	What it applies to	What makes it different
Purchase APR	Everyday spending	Only charged if you carry a balance past the grace period
Balance transfer APR	Debt moved from another card	Often a 0% intro rate, plus a 3% to 5% transfer fee
Cash advance APR	ATM withdrawals, cash-like transactions	Higher rate, no grace period, plus a fee
Penalty APR	Your whole balance after a serious misstep	Can top 29.99%; triggered by payments 60+ days late
Introductory or promotional APR	New purchases or transfers for a set window	Expires on a fixed date, then the regular rate applies

Under Regulation Z (12 CFR 1026.53), when you pay more than the minimum, the issuer must apply the extra to the balance with the highest APR first. That rule matters if you have a cash advance sitting at 29.99% next to purchases at 0%.

How the grace period lets you skip interest entirely

Your statement closes, then you have a window before the payment is due. If you paid the previous statement in full, new purchases made during that cycle carry no interest as long as you also pay this statement in full by the due date. That window is the grace period.

Federal law requires issuers to deliver your statement at least 21 days before the due date (12 CFR 1026.5(b)(2)(ii)), so the grace period on purchases is typically 21 to 25 days.

Two things kill the grace period. Carry even a small balance into the next cycle and interest starts on new purchases from the day you buy. Take a cash advance and interest starts the same day, grace period or not. Once you lose it, most issuers require two consecutive statements paid in full before it comes back.

How to calculate credit card interest using APR

The math behind your finance charge is simple once you see it laid out. Issuers use the average daily balance method, which means every day’s balance counts, not just the number on the statement.

Using those steps, a $1,000 average daily balance at 24.99% APR over a 30-day cycle costs about $20.50. Many issuers compound daily, meaning each day’s interest is added to the balance before the next day’s charge, which nudges that figure slightly higher.

What carrying a balance really costs

The headline APR looks abstract. The total you repay does not. Here is what happens to a $1,000 purchase balance at 24.99% depending on how you pay it down, with a cash advance added for comparison.

Scenario	Amount	APR and fees	Time to pay off	Total repaid
Pay in full by due date	$1,000	24.99%, grace period applies	1 month	$1,000
Pay $100 a month	$1,000	24.99%	About 12 months	About $1,120
Pay $30 a month (near minimum)	$1,000	24.99%	About 58 months	About $1,725
Cash advance, paid over 12 months	$1,000	29.99% plus 5% fee ($50)	12 months	About $1,220

The $30-a-month row is the one that traps people. Nearly $725 in interest on a $1,000 balance, spread over almost five years, is why the CARD Act of 2009 requires every statement to show how long it will take to clear your balance making only minimum payments (12 CFR 1026.7(b)(12)). Look for that box on your next statement.

The scale is enormous nationally. The CFPB’s 2023 Consumer Credit Card Market Report found cardholders paid more than $100 billion in interest in 2022, and the Federal Reserve’s G.19 consumer credit release has shown the average rate on accounts assessed interest sitting above 20% since 2023.

What counts as a good APR

There is no single good number, because your rate is priced on your credit profile. Issuer disclosures for 2025 and 2026 show a consistent pattern: rewards cards for strong credit typically start in the high teens, mainstream cards for fair credit land in the mid to high 20s, and store cards and cards for rebuilding credit often sit at or above 30%.

A useful benchmark is the federal credit union ceiling. The Federal Credit Union Act caps loan rates at federal credit unions at 15% unless the NCUA board raises the limit, and the board has set that ceiling at 18% for many years. A card rate under 18% is genuinely competitive. Anything above the Fed’s reported average deserves scrutiny.

Your APR only matters if you carry a balance. If you pay in full every month, a 29.99% card and a 15.99% card cost the same amount of interest: zero. In that case, fees and rewards are the only numbers worth comparing.

How to lower the APR you already have

Issuers do cut rates on request, especially for cardholders with on-time payment histories. Call the number on the back of the card, cite your history and any lower offers you have received, and ask for a reduction. A no costs you nothing.

If you are struggling, ask about a hardship program. Most large issuers run them, and they can temporarily cut the APR to single digits or zero in exchange for a fixed payment plan. Nonprofit credit counseling agencies affiliated with the National Foundation for Credit Counseling can negotiate similar terms through a debt management plan.

A 0% balance transfer can help if you can clear the debt before the promotion ends, but the 3% to 5% transfer fee is real money and the rate jumps on a fixed date. A cash advance is almost never the answer. For true emergencies, a credit union payday alternative loan, capped by the NCUA at 28% APR with an application fee of no more than $20, costs far less than a cash advance and vastly less than a “payday loan“. Compare any “loans emergency” option against your existing card’s purchase APR before borrowing new money.

State rules and who gets capped rates

Credit card APRs rarely fall under “usury laws” in your own state. Since the Supreme Court’s 1978 decision in Marquette National Bank v. First of Omaha, a national bank can charge the rate allowed by the state where it is chartered to customers anywhere in the country, under 12 U.S.C. § 85. That is why so many issuers sit in Delaware, South Dakota and Utah, states with no rate cap on cards.

Two federal laws do cap rates for specific groups. The Military Lending Act limits the military annual percentage rate on cards for active-duty service members and their dependents to 36%, including most fees. The Servicemembers Civil Relief Act caps interest at 6% on debts you took on before entering active duty, as long as you ask the issuer and provide orders.

Your rights on rate changes

The CARD Act, enforced through Regulation Z, gives you specific protections against surprise rate hikes.

• The issuer cannot raise the APR on your existing balance during the first year after opening the account, except when a promotional rate ends, the index on a variable rate rises, or you fall 60 days behind (12 CFR 1026.55).
• Any rate increase on new purchases requires 45 days’ written notice (12 CFR 1026.9(c)(2)), and you have the right to reject the increase and pay off your existing balance at the old rate.
• A penalty APR can only hit your existing balance if a payment is at least 60 days late, and the issuer must restore the original rate after six consecutive on-time payments (12 CFR 1026.55(b)(4)).
• Issuers that raised your rate for any reason must review the account at least every six months and reduce the rate if the reason no longer applies (12 CFR 1026.59).
• Double-cycle billing, which charged interest on balances you had already paid, is banned (12 CFR 1026.54).

If an issuer breaks these rules, file a complaint through the CFPB’s online complaint portal. National banks also answer to the Office of the Comptroller of the Currency, and federal credit unions to the NCUA. If an unpaid balance is sold or sent to a “debt collector“, the Fair Debt Collection Practices Act controls what that collector can say and do, and the collector cannot add interest your original agreement did not allow.

FAQ

Is APR charged monthly or yearly on a credit card?

Neither, strictly. The APR is divided by 365 and charged daily on your unpaid balance, then totaled on your monthly statement as the finance charge.

What is the difference between APR and interest rate on a credit card?

On a credit card they are the same number. APR only differs from the interest rate on products like mortgages, where upfront fees are rolled into the APR.

Does APR matter if I pay my balance in full?

No. Paying the full statement balance by the due date keeps the grace period active, and the purchase APR never applies. Cash advances are the exception, since they accrue interest from day one.

Why did my credit card APR go up without my doing anything?

Most card APRs are variable and tied to the prime rate. When the Federal Reserve raises rates, your APR rises automatically, and issuers do not have to give 45 days’ notice for index-driven changes.

What is a penalty APR and how do I get rid of it?

A penalty APR, often around 29.99% or higher, can apply after a payment is 60 or more days late. Under Regulation Z the issuer must restore your original rate after six straight on-time payments.

Can a credit card charge more than my state’s usury limit?

Usually yes. Federal law lets a national bank export the rate rules of its home state, so a card issued from Delaware or South Dakota is not bound by the cap where you live.