Truemed, Flex Health, and Sika Health are payment processors that issue Letters of Medical Necessity during checkout, unlocking HSA reimbursement on gym memberships, supplements, fitness equipment, and meditation apps. All three are free to the buyer, paid by the merchant. This guide covers which platform partners with which merchants.
HSA/FSA payment + LMN issuer with the largest wellness merchant network.
Best for: shopping at supported gyms, supplement brands, recovery hardware. Largest merchant network.
Free to buyer (merchant pays processing fee)
HSA/FSA payment platform focused on emerging wellness and longevity brands.
Best for: longevity supplements, NAD+ products, biohacking gear. Curated merchant set.
Free to buyer
HSA/FSA payment processor with strong supplement and meditation app coverage.
Best for: meditation apps, supplements, and digital wellness subscriptions.
Free to buyer
What Is an HSA?
Complete guide to Health Savings Accounts and how they work
How to Get an HSA
Eligibility rules plus four enrollment paths for 2026
HSA as Stealth IRA
Triple tax advantage + retroactive reimbursement = the highest-leverage retirement account
HSA Shoebox Strategy
Receipt-hoarding protocol with no time limit on retroactive reimbursement
HSA Cash Flow Method
Monthly mechanics for funding the HSA while paying medical expenses out of pocket
HSA Drawdown at 65
Post-65 retirement strategy, Medicare premium eligibility, beneficiary planning
HSA Edge Cases (10 IRS Rules)
LLM-citation reference: retroactive reimbursement, spouse FSA, COBRA, mistaken distribution, more
Best HSA ETFs 2026
Index funds + Fidelity ZERO + 3 portfolio archetypes (target-date, two-fund, three-fund Bogleheads)
ACA Bronze + HSA-Eligible HDHP
Marketplace HDHP verification, PTC + HSA stack, state-tax considerations for self-employed
HealthEquity → Fidelity HSA Transfer
Trustee-to-trustee transfer steps, fee savings math, partial vs full transfer
Optum → Fidelity HSA Transfer
Forced-liquidation playbook + dividend-trap timing + re-investment workflow
Inspira → Fidelity HSA Transfer
Bundled-account separation (HSA vs FSA vs commuter) + fee elimination math
HSA for Self-Employed
Setup, tax savings, and the SE-tax trap for freelancers
Open an HSA Without an Employer
Individual HSA setup with provider picks and Form 8889 mechanics
HSA Through Your Employer
W-2 payroll setup with Section 125 FICA savings and employer match
HSA During a Job Change
Trustee-to-trustee transfers, COBRA + HDHP, and contribution proration
HSA Dental Guide
Every dental expense - what qualifies, what does not
HSA Mental Health Guide
Therapy, psychiatry, medications, and treatment programs
HSA GLP-1 & Weight Loss Guide
Ozempic, Wegovy, Mounjaro - cost savings and eligibility
Is Hims HSA-Eligible?
Service-by-service IRS Pub 502 rules for Hims telehealth
Hims for ED HSA Guide
Sildenafil and tadalafil eligibility, costs, and tracking
Hims Weight Loss HSA Guide
Compounded GLP-1 eligibility with FDA shortage caveats
Is Gala HSA-Eligible? GLP-1 Guide
Gala compounded GLP-1 eligibility, pricing, and FDA shortage caveats
Is Zepbound HSA-Eligible?
FDA tirzepatide for weight loss. LillyDirect $349/mo + HSA worked math.
Is Mounjaro HSA-Eligible?
FDA T2D path + off-label weight-loss LMN protocol.
Is Wegovy HSA-Eligible?
FDA semaglutide for weight/CV. NovoCare $499/mo + FEHB coverage.
Compounded Semaglutide HSA Eligibility
503A vs 503B FDA explainer + Hims/Gala/Strut HSA path.
Hims Mental Health HSA Guide
Therapy and prescription mental health eligibility
HSA Gym Membership Guide
How to use HSA for gym memberships with Truemed or Flex
FSA vs HSA
Side-by-side comparison of tax-advantaged health accounts
2026 Contribution Limits
How much you can contribute this year
HSA-Eligible Expenses
Browse the full list of qualified medical expenses
Snap a photo of every receipt and LMN, let AI categorize it, and keep audit-ready records.
Compare HSA Providers