Credit union balance transfer offers: compare the full cost

What makes an offer worth comparing?

Compare the cost of moving a balance over the period you actually expect to repay it. The introductory APR alone is not the answer. A transfer fee, a short deadline, a limited credit line or interest after the promotion can change the outcome. Membership is another gate: the credit union must be one you can join.

Start with the balance, current APR and a monthly payment you can sustain. Use those same inputs for every offer. A comparison becomes misleading when one scenario assumes a bigger payment or a much faster payoff without explaining the difference.

A dated issuer example

Checked October 15, 2026, Navy Federal Platinum advertises 0.99% introductory APR for 12 months on transfers made within the first 60 days, no transfer fee, then a variable APR of 10.24%–18%. Its page lists January 3, 2027 as the offer expiration. Membership and approval requirements apply. This is a current example, not a ranking of all credit union offers.

Question	Why it matters
When does the intro clock begin?	A period starting at account opening leaves less time if you transfer later.
Is the fee a percentage with a minimum?	A minimum can matter on smaller transfers.
Which debts are eligible?	An issuer may exclude its own accounts or other transaction types.
What happens after the promotion?	The remaining balance can begin accruing interest at the regular rate.

A same-balance example

Imagine moving $3,000 and paying it off with twelve equal monthly payments. At 0.99% APR and no transfer fee, a simplified monthly-rate model produces a payment of about $251.34 and total interest of approximately $16.11. At 0% with a 3% fee, the opening balance would instead be $3,090 and the twelve-month payment would be $257.50.

These hypothetical scenarios show why a slightly positive APR can sometimes cost less than a zero rate with a fee. They assume fixed payments, no new purchases, no other charges and immediate availability of the full repayment period. Actual daily interest, transfer timing and account terms can produce a different result. They do not predict whether you will receive the required limit.

Keep purchases out of the comparison

A promotional transfer APR does not automatically apply to new purchases. Carrying a transferred balance can also affect the purchase grace period. Ask the issuer how new spending would be treated before using the account for both purposes. The CFPB explains this distinction in its guidance linked below.

Membership is separate from card approval

Check the field of membership, any required account opening and the documents needed to join. Then check card eligibility. Being able to join a credit union is not a promise of approval, an introductory offer or a particular credit line.

Before you move a balance

Save the offer and note both the transfer deadline and promotion end.
Confirm the eligible debt and approved available limit, including any fee.
Set a realistic payment target with a buffer.
Continue paying the original account until the transfer is confirmed.
Check both statements after posting and confirm the remaining balance.

Common questions

Does “no transfer fee” mean no interest?

No. A standard-rate transfer may have no transaction fee while still accruing interest. Check both numbers.

Should I transfer just because the rate is lower?

First compare the dollar costs over your intended payoff period. A short remaining payoff can make a fee harder to recover.

Where should I start the calculation?

Use the balance transfer calculator for a payment target. It does not compare every post-promotion outcome.

Sources and checked date

Official sources checked October 15, 2026. Numerical product terms are dated snapshots and can change.

Examples are illustrative. This initial editorial edition remains under review.