Flex MCP is a new MCP server that connects AI assistants like Claude, Cursor, Codex, and Windsurf directly to your Flex account, so you can look up orders, reconcile payments, manage billing, and run reports without leaving your coding or productivity tools.
Lifestyle Spending Accounts (LSAs) are one of the most flexible employer benefits on the market. Here's what an LSA covers, how it compares to an HSA or FSA, and how to stack all three to maximize your pre-tax savings on wellness.
Find out how you can claim HSA expenses from previous years, including what the rules are and how reimbursements work when withdrawing funds for purchases.
Learn which fertility treatments, tests, and monitors are HSA/FSA eligible and how to easily buy approved products using your benefits funds online today.
Find out when women’s shoes are HSA and FSA eligible, why a Letter of Medical Necessity (LMN) is almost always required, and how to buy them conveniently.
We’ve compiled a list of over 200 FSA eligible items, and explained when each item is always eligible, or eligible with a Letter of Medical Necessity.
Find out precisely what the HSA contribution deadline is, when it is, and how it works so you can maximize your tax-advantaged dollars and avoid penalties.
Learn about key HSA/FSA policy proposals, including HSA modernization, caregiver support, and higher DCFSA limits—and how you can advocate for change.
Learn when mattresses qualify for HSA/FSA spending, including IRS rules, Revenue Ruling 55-261, and why a Letter of Medical Necessity is required.
Learn what makes a product or service a qualified HSA/FSA expense under IRS rules, including IRC § 213(d), Publication 502, and eligibility categories.
We built a Slack agent that can trace a transaction end to end—and, when it finds a bug, open a pull request with a proposed fix.
Learn whether period underwear is HSA or FSA eligible, when you may need an LMN, and how to purchase qualifying products using your healthcare benefits.
Learn when and why menstrual pads are HSA and FSA eligible, which period products qualify, and how and where to buy pads using your HSA or FSA online.
Learn how HSA reimbursement rules work, including timelines and time limits, eligibility, examples, and when and how to reimburse yourself from your HSA.
We go over the HSA withdrawal rules, including when withdrawals are taxable, how to avoid penalties, and how to withdraw funds properly from your HSA.
Learn how HSA eligibility works with Medicare, when contributions must stop, potential penalties, & how to use your HSA funds after enrolling in Medicare.
Learn the HSA family coverage rules and who qualifies as an HSA dependent. Find out if you can use your HSA for a spouse, children, and tax dependents.
Learn when endurance race fees, training costs, and recovery products may qualify for HSA/FSA. Understand how a Letter of Medical Necessity can make race expenses eligible.
Learn what a Medicare flex card is, how it works, who qualifies, key benefits, whether you can have a card in addition to an HSA or FSA account or plan.
We answer the most important questions asked about HSAs and taxes, including whether your HSA contributions are tax deductible and what you need to report.
Learn how to invest your Health Savings Account (HSA) funds, understand key rules, and explore strategic options to grow your tax-free funds over time.
Learn about the best HSA and FSA payment solutions for yoga studios, what compliance rules apply, and how to become eligible to accept HSA/FSA payments.
Learn when semaglutide qualifies for HSA and FSA use, which medical conditions support eligibility, and how to buy programs with using your HSA/FSA funds.
FSA vs HSA eligible expenses explained by Flex’s Head of Compliance Benny Cole, using IRS rules, Publication 502, and industry eligibility categories.
Our engineering team explains how to listen to and verify webhooks in your Flex-powered checkout to secure order confirmations and reduce fraudulent orders.
Learn when gym memberships qualify as HSA and FSA eligible, when you need a medical letter, and how to buy eligible memberships online with ease today.
Find out when tampons qualify as HSA/FSA eligible, whether a medical letter is needed, and how to purchase eligible tampons online with your benefits.
Find out how to accept HSA/FSA payments using Stripe, including when you qualify and how to actually set up the integration to enable HSA/FSA payments.
Is pilates HSA or FSA eligible? Learn when pilates qualifies, if you need a Letter of Medical Necessity, and how to buy with HSA or FSA funds for classes.
From sleep trackers to posture gear, here are 10 surprising HSA/FSA-eligible items your pre-tax dollars can cover, and where you can buy them online.
We explain why HSA money doesn’t expire at the end of the year, what happens to unspent funds, and creative ways to spend your HSA funds efficiently.
Do HSA funds expire or follow a use it or lose it rule? Learn how HSA rollover works, how long funds last, and how to spend your HSA wisely & efficiently.