Credit Union Deposit Growth
Credit union deposit growth costs more and lasts less
Members shop rates now, and the money that arrives for a promotion is often the first to leave when it ends. High-yield online accounts, brokerage cash, and big banks are a tap away, so the credit union pays up to win deposits and pays again to keep them.
The rate special that brings in new money also invites existing members to move their balances into it, and the credit union ends up repricing money it already had. Cost of funds climbs, margin tightens, and the ALCO starts asking what each campaign's deposits really cost. Meanwhile the checking relationships that keep deposits steady get less attention than the next promotion.
Credit Union: From 1% to 5% Growth — No New Headcount
What changes when this works
Depositors with checking attached
RC Strategies pairs certificate and money market offers with a checking and direct deposit offer, because the account a member uses every day anchors the rest. Curinos vendor research found a renewing CD customer with a checking account had a 92% chance of renewing a second time, against 82% without one.
Growth in liquid, yield-bearing accounts
RC Strategies builds product campaigns around accounts that pay a yield and keep money accessible, so the offer matches where member money is already moving. By NCUA's count, money market accounts were the fastest-growing share type at credit unions in the year to June 2026, up 9.0%, against 5.9% for certificates.
New money from other institutions
RC Strategies aims deposit offers at money members and prospects keep at other institutions, using member data and targeted paid media, instead of broadcasting a rate that existing balances move into. In vendor research from Curinos, acquisition rates at US banks ran almost 100 basis points above portfolio rates.
Promotional balances that stay
Onboarding starts the day a promotional account opens and runs through the depositor's first weeks, adding checking and other deposit accounts to the relationship. Curinos vendor data shows customers with the full suite of deposit products account for nearly half of CD balances and leave at less than half the rate of CD-only customers.
The services that power this outcome
Credit Union Digital Marketing
RC Strategies runs credit union digital marketing across SEO, AI search, paid search, social, and email, measured on the members, loans, and deposits won.
Credit Union Paid Media Management
RC Strategies plans and buys credit union paid media across search, social, and streaming, and ties spend to funded loans, new accounts, and deposits.
Credit Union Marketing Automation & Member Journeys
RC Strategies builds automated member journeys, from onboarding to next-product offers, that turn new accounts into full relationships without adding staff.
Built for credit union regulatory realities, not generic bank marketing
What clients ask before we start
Do deposit promotions attract rate chasers who leave when the rate ends?
Some will, and the credit union's own practices make a big difference in how many. Curinos vendor research found attrition varies widely by provider: in 2024, bottom-quartile providers had attrition above 11%, almost twice the top quartile's rate. RC Strategies works out offer terms with the finance team before launch, such as relationship pricing that pays the top rate to members who bring direct deposit, so the promotion attracts members who plan to stay.
How do you keep certificate money when it matures?
Reach the member before the maturity date with a choice that keeps the money at the credit union: renew, or move it into a liquid account. Curinos vendor data on US banks shows switches from CDs into liquid accounts doubled from the first quarter of 2024 to the first quarter of 2025, so an offer limited to a renewal rate ignores where a growing share of that money is heading. RC Strategies runs maturity journeys that put both options in front of the member ahead of the date.
How can a credit union grow core deposits without raising rates?
Grow checking, where balances arrive with the paycheck. NCUA data shows share drafts, the checking accounts members pay bills from, grew 6.0% in the year to June 2026, while regular shares grew 2.6%. RC Strategies builds checking campaigns around direct deposit, with a landing page and follow-up emails that walk a new member through moving a paycheck, so balances build without a rate increase.
How do you know a deposit campaign actually worked?
Look at the balances still in place after the promotion ends and what they cost; gross deposits raised come second. Curinos vendor research on US banks found that winning deposits back costs 1.70% more, all-in, than keeping them, which is why retention belongs in the results. RC Strategies reports each campaign's new money apart from money moved between accounts, then tracks those balances and their cost past the promotional period.
How do you prove deposit marketing ROI to the ALCO and board?
Show what each campaign's money costs next to what it earns once it funds loan growth, because that spread is what reaches net interest margin. NCUA data shows credit union net interest margin at 3.49% of average assets through the second quarter of 2026, up from 3.32% a year earlier. RC Strategies builds deposit reporting for the ALCO and board in those terms, following the format in our guide to marketing ROI board reporting.
Which members are moving the most deposits out of credit unions?
Gen X and baby boomer members, by dollar volume. Vendor research from Cornerstone Advisors found that 65% of the $2.15 trillion in deposits community banks and credit unions have lost to other providers came from those two generations. RC Strategies segments retention and maturity campaigns by age and balance, so members with the most money at stake hear from their credit union before a competitor reaches them.
More outcomes worth a look
Build deposits that outlast the promotion
