If your group health plan renews on a calendar-year basis, open enrollment is roughly ten to twelve weeks away, and the work that determines whether it goes smoothly starts well before employees ever see an enrollment form. For businesses in the 20-to-200-employee range, late summer is the point where renewal decisions, carrier comparisons, and employee communications either get organized or start piling up against a deadline. Here’s what the runway to open enrollment actually looks like and where small employers tend to lose time they didn’t need to lose.
Why August Matters More Than It Seems To
Most small group plans renew January 1, and most open enrollment periods for employees run sometime between mid-October and mid-December, giving HR and finance a narrow window to communicate changes, collect elections, and get everything processed before the new plan year starts. Carriers, meanwhile, typically want renewal decisions locked in well before that employee-facing window opens, which means the real planning work happens now, not in November. Waiting until enrollment materials are due to start comparing plans is the single most common reason small employers end up accepting a renewal they haven’t actually shopped, simply because there wasn’t time left to do anything else.
There’s also a specific compliance mechanism worth knowing about if your group is shopping for a first-time plan or switching carriers outside your normal renewal cycle: many states allow small groups to enroll in new medical coverage during an annual special open enrollment window, typically running November 15 through December 15, without the participation or contribution minimums that normally apply. It’s a narrow window, and it doesn’t apply to every situation, but it’s useful to know it exists if you’re weighing a carrier change for the new plan year.
Get the Renewal Numbers Early
The first concrete step is requesting renewal figures from your current carrier or broker as early as your contract allows, generally 90 to 120 days before the plan year ends. Early numbers give you time to actually negotiate, restructure plan tiers, or shop competing quotes instead of reacting to whatever number arrives. If you’re on a fully-insured plan, ask specifically what’s driving the renewal increase, whether it’s claims experience, trend, or a rating change, since that shapes whether cost control means plan design changes, employee contribution adjustments, or a genuine carrier switch. If you haven’t reevaluated your funding structure in a few years, this is also a reasonable point to at least ask a broker whether a level-funded or self-funded arrangement makes sense at your current group size and claims history, even if you ultimately stay fully insured.
Know Which Compliance Deadlines Actually Apply to You
Compliance obligations scale with size, and it’s worth being precise about which ones apply to your business rather than assuming the full ACA employer mandate machinery is relevant. The employer shared responsibility provisions, including the requirement to offer affordable, minimum-value coverage, apply to applicable large employers, generally those with 50 or more full-time equivalent employees. If your group falls in that range, the IRS’s 2026 affordability threshold is 9.96% of an employee’s income, up from 9.02% in 2025, meaning the employee’s required contribution for the lowest-cost, self-only plan option can’t exceed that share of income under whichever safe harbor method you use, W-2 wages, rate of pay, or the federal poverty line. Under the federal poverty line safe harbor specifically, that works out to roughly $130 a month in maximum employee contribution for 2026, based on the 2025 poverty guideline the IRS permits employers to use.
Even if you’re below the 50-employee threshold and the mandate doesn’t technically apply to you, the affordability math is still useful as a sanity check on your contribution strategy, since a plan that isn’t affordable by IRS standards is often not particularly affordable for your employees either. Separately, if you file Form 1095-C, note that furnishing deadlines to employees fall at the end of January, with IRS filing deadlines in late February for paper filers and the end of March for electronic filers, so payroll and HR should have that on the calendar regardless of when open enrollment itself happens.
Build the Employee Communication Timeline Backward
A common mistake is treating employee communication as something that happens during the enrollment window rather than before it. Employees make better decisions, and HR fields fewer last-minute questions, when plan changes, premium shifts, and any new options are explained two to three weeks before elections open, not on the first day of enrollment. If you’re introducing something new this year, an HSA-eligible plan, a voluntary benefit, a wellness incentive, that lead time matters even more, since employees generally need more than a single email to understand a benefit they haven’t used before. Building the communication calendar backward from your enrollment deadline, rather than forward from today, tends to surface how little time is actually left once you account for carrier processing, payroll cutoffs, and the holidays sitting in the middle of most enrollment windows.
Use This Window to Benchmark, Not Just Renew
Renewal season is also the natural moment to ask how your benefits stack up against what similar-sized employers in your industry are offering, since recruiting and retention pressure doesn’t pause just because your carrier sent a renewal number. If competitors are absorbing more of the premium, offering richer ancillary benefits, or providing an HSA employer contribution you don’t, that’s worth knowing before you finalize next year’s plan design, not after you’ve lost a candidate to a better benefits package. A broker who works with employers your size can usually provide at least a rough sense of how your contribution strategy and plan richness compare to market, which turns renewal season into a strategic decision rather than a purely administrative one.
The Short Version
Open enrollment for a January 1 plan year effectively starts now, not in November. Getting renewal numbers early, understanding which compliance deadlines genuinely apply to your headcount, and building employee communications on a backward timeline are the three moves that separate a smooth renewal from a scramble. None of it requires switching carriers or overhauling your plan design, it just requires starting the clock a few months earlier than most employers instinctively do.
Sources
- ACA 2026 Special Open Enrollment Window for Small Groups — Word & Brown
- Open Enrollment 2026: HR Tips for a Smarter, Simpler Season — UKG
- 2026 Health Plan Compliance Deadlines — Parrott Benefit Group
- Open Enrollment Season in the Workplace (2025-2026 Edition) — Fisher Phillips
- New ACA Affordability Percentage For 2026 Is 9.96 Percent — Liebert Cassidy Whitmore
- ACA Affordability & Employer Mandate Updates for 2026 Plan Year — SBAM
- The ACA Affordability Determination in 2026 — Newfront
This post is provided for general informational purposes only and does not constitute legal, tax, or insurance advice. Compliance requirements, deadlines, and thresholds vary by employer size, state, and plan structure. Before making renewal or plan design decisions, review your specific plan documents and consult a licensed insurance broker or benefits advisor, along with your tax or legal counsel as appropriate.