Flux gives gyms recurring card billing, hosted signup fields, and one integration for cards, ACH, and stablecoins so members can pay the way they want.
Why gyms choose Flux
Recurring billing that sticks
Charge memberships automatically and cut the failed-rebill churn.
Clean signup
Hosted fields keep card data off your systems during member signup.
No long-term contract
Cancel anytime, with no setup fees and no contract while you grow.
How gyms get paid
Gyms run memberships on recurring cards, take ACH for annual plans, and sign members up through hosted fields, all on Flux.
A typical Flux setup for gyms
Membership dues are the backbone, so the core rail is recurring card-on-file billing driven through the REST API, with ACH as the option for members who prefer dues pulled from a bank account. Bank accounts do not expire the way cards do, which matters across a multi-year membership. Day passes, guest fees, and cooler drinks run as card-present charges at the front desk, and January signup surges just mean more volume, not a plan change.
Annual maintenance fees bill on their own schedule beside monthly dues, and personal training add-ons ride the same stored card. Card payments settle in 1-2 business days and ACH in 1-3, so dues land predictably for payroll. QuickBooks sync keeps dues, day passes, and retail in separate buckets. Pricing is flat 2.9% plus 30 cents, with a consumer pass-through option where local surcharging rules allow, and no monthly fees on qualifying card volume or minimums in the slow summer months.
What gyms should watch
The classic gym dispute is the member who says they cancelled and got billed anyway. It is winnable, but only with paper: a signed agreement, a dated cancellation policy, and the billing history, all of which you can attach to the dispute response. The cheaper fix is operational. Confirm every cancellation in writing, stop the billing schedule the same day, and refund a contested final charge rather than defending it out of principle.
Failed payments are the quieter leak. Cards on file expire or get reissued, and every decline is dues you have to chase at the front desk. The API lets you set retry timing and flag delinquent members to staff before their next visit, and moving long-tenured members to ACH removes the expiry problem entirely. Watch freezes too: pausing a schedule is one API call, and it keeps an injured member from becoming a cancellation.
Simple, transparent pricing
Flux charges a flat 2.9% plus 30 cents per transaction, with volume discounts for higher-volume gyms and the option to pass the fee to the customer at checkout where local surcharging rules allow. No setup fees and no contracts. Accounts processing under $100,000 a year in card volume may be subject to a $20 monthly account fee.
Frequently asked questions
How do gyms accept payments with Flux?
Gyms accept credit and debit cards, ACH bank transfers, and stablecoins through one Flux integration, with drop-in hosted fields that keep card data off your own systems.
What does Flux charge gyms?
A flat 2.9% plus 30 cents per transaction, with volume discounts for higher-volume merchants and no setup fees or contracts. Accounts processing under $100,000 a year in card volume may be subject to a $20 monthly account fee. You can also pass the processing fee to the customer at checkout where local surcharging rules allow.
How fast do gyms get their money?
Card payments settle in one to two business days and ACH in one to three business days. Stablecoin payments go to your wallet instantly.
Can members pay gym dues by bank transfer instead of a card?
Yes. ACH debits pull dues directly from a member's bank account and settle in 1-3 business days. Bank accounts do not expire, so you avoid the expired-card declines that come with multi-year memberships.
What happens when a member's card on file declines?
The charge fails immediately and you decide what happens next: the API lets you schedule retries and surface the decline to front desk staff. Many gyms pair this with an ACH option so long tenure does not depend on plastic that expires.
How do I win a chargeback from a member who claims they cancelled?
Respond with the signed membership agreement, your cancellation policy, and the billing history showing usage after the claimed cancellation date. Keep written confirmation of every cancellation request; that record is usually what decides the case.
Ready to get gyms paid with Flux?
Cards, ACH, and stablecoins in one platform. Apply in about two minutes.
Get Started