Your Health Plan Renewal Just Got a Lot More Interesting
If you sponsor a group health plan for your small business, you've probably never heard of a "pharmacy benefit manager" contract clause called spread pricing. You're about to become very familiar with it. In February 2026, Congress folded a sweeping pharmacy benefit manager (PBM) reform package into the annual spending bill, and it fundamentally rewrites how the middlemen who process your employees' prescription claims get paid.
The headline number is the one to remember: in West Virginia, where state regulators required a rebate pass-through approach ahead of the federal mandate, the average group health plan rate increase for 2026 came in at 12.6%, compared with 19.5% under the old system. That's not a rounding error. For a business with 20 employees on a group plan, the difference between those two numbers can be tens of thousands of dollars a year.
This guide walks through what actually changed, when it takes effect, and what a small business owner should actually do about it — because the honest answer is "not much, yet," but the prep work now will save you a scramble in 2028.
What a PBM Actually Does (And Why It's Been a Black Box)
Every time an employee fills a prescription, the claim runs through a pharmacy benefit manager — the intermediary that sits between your health plan, the drug manufacturer, and the pharmacy. PBMs negotiate rebates from manufacturers, set the prices pharmacies get reimbursed, and decide which drugs go on your plan's formulary.
Historically, PBMs made money in ways that were nearly impossible for a plan sponsor to audit:
- Spread pricing: charging your plan more for a drug than the PBM actually paid the pharmacy, and keeping the difference.
- Rebate retention: negotiating rebates from drug manufacturers based on your plan's utilization, then keeping some or all of that money instead of passing it back to lower your premiums.
- Non-disclosure contract terms: many PBM contracts historically prohibited employers from even seeing drug-level pricing data, let alone auditing it.
For a small business with 15 or 50 employees, there was effectively no way to know whether your PBM was passing through savings or pocketing them. Large, self-insured employers with dedicated benefits consultants could sometimes negotiate transparency. Everyone else took the number on the renewal invoice at face value.
What the 2026 Reform Actually Requires
The Consolidated Appropriations Act (CAA) reform package targets three things directly:
1. 100% rebate pass-through. PBMs contracting with group health plans must pass through 100% of rebates, fees, and other manufacturer remuneration tied to the plan's drug utilization — paid quarterly, within 90 days of quarter-end. A PBM contract that doesn't include this term can no longer be considered "reasonable" under ERISA, which matters because plan fiduciaries have a legal duty to only enter reasonable service contracts.
2. Spread pricing is prohibited. PBMs must move to pass-through pricing, where their compensation is a flat administrative fee that isn't tied to drug prices. No more quietly marking up what the pharmacy actually received.
3. Mandatory transparency reporting. PBMs must provide semiannual reports detailing net drug spending, rebates received, spread pricing history, and any benefit-design features that steer utilization toward PBM-affiliated pharmacies. Larger employers (100+ employees) get more granular, drug-level detail; every employer — regardless of size — is entitled to a plan-level summary. Civil penalties apply for non-disclosure or for knowingly filing false reports.
When Does This Actually Kick In?
This is the part that trips people up: the reform is law now, but most of it doesn't bite until 2028–2029.
| Milestone | Date |
|---|---|
| CAA signed into law | February 2026 |
| Final implementing regulations due | August 3, 2027 |
| Core requirements (rebate pass-through, spread pricing ban, reporting) effective | August 3, 2028 |
| Enforced for calendar-year plans | January 1, 2029 |
There's a nuance worth flagging: separate from the federal CAA timeline, some spread-pricing prohibitions and passthrough-pricing mandates are already being phased in at the state level and through direct PBM settlements (the FTC's 2026 action against Express Scripts, for instance, imposed near-term behavioral restrictions on that one PBM specifically). So "2029" is the outer bound for the federal floor — some of your plan's pricing terms may already be shifting sooner, especially if your state has its own PBM transparency law or your carrier renegotiated ahead of the mandate.
Why This Isn't Just a "Big Company" Problem
It's tempting to read "ERISA plan fiduciary duties" and "100+ employee reporting tier" and assume this is a large-employer issue. It isn't, for two reasons:
First, small group premiums are already absorbing the old system's inefficiencies. Small businesses with ACA-compliant plans are seeing a median 2026 premium increase around 11%, with insurers citing rising drug costs — especially GLP-1 and specialty drugs — as a top driver. Rebate opacity and spread pricing are baked into that number. You're paying for the black box whether or not you can see inside it.
Second, if you use a PEO or a level-funded plan, you likely have more control over your PBM than you think. Level-funded plans are technically self-insured, which means the employer — not just the carrier — often has the ability to choose its own third-party administrator and PBM. If you're in a PEO's master health plan, you're along for the ride on whatever PBM contract the PEO negotiated; it's worth asking your PEO directly whether their PBM contract already includes 100% rebate pass-through, since some PEOs have historically layered their own markups (in the 5–20% range, according to industry reporting) on top of carrier rates.
What to Actually Do Between Now and 2029
You don't need to overhaul your benefits strategy this quarter. But a few low-effort moves now put you in a much better position when the mandate lands:
- Ask your broker or PEO one direct question at your next renewal: "Does our PBM contract already include 100% rebate pass-through and a spread-pricing ban?" Some carriers and PBMs are moving early to get ahead of the 2029 deadline, and early movers may already be passing savings back.
- Request the plan-level summary report if you're not already getting one. Every employer, regardless of size, is entitled to this under the new law once it's phased in — and many PBMs already offer a version of it voluntarily.
- Flag PBM contract renewal dates on your calendar. Multi-year PBM contracts signed today may run past 2028, and the law prohibits renewing a non-compliant contract, so a renewal in 2027 or 2028 is the natural checkpoint to renegotiate terms.
- If you're shopping level-funded or self-funded plans, ask candidate PBMs now whether their standard contract already meets the CAA's 2029 requirements. Locking in transparent terms early avoids a forced renegotiation later.
Keep Your Own Numbers Just as Transparent
The irony of PBM reform is that it's forcing an entire industry to do something small businesses already understand instinctively: if you can't see where the money went, you can't manage it. The same discipline applies to your own books. Beancount.io provides plain-text accounting that gives you complete transparency and control over your financial data — every transaction is a line you can read, audit, and trace, with no proprietary format locking you out of your own numbers. Get started for free and see why developers and finance professionals are switching to plain-text accounting.