The short answer

Start with your actual 2026 enrollment and employer spending, then model several 2027 renewal scenarios. Aon forecasts a 9.5% increase in employer health care costs before mitigation for 2027, but that is a national planning signal—not a quote for your company. Your contribution policy, coverage tiers, hiring plans, and funding arrangement determine the budget you actually need.

A renewal increase is only one part of a health benefits budget. A company can receive a modest rate increase and still spend much more if several employees add family coverage. It can also report a lower employer cost while asking employees to absorb a much larger share.

This guide separates the market evidence from the decisions you control. Figures labeled “illustrative” are planning examples, not AffordaCare prices or predictions. Use them to build a budget you can replace with actual carrier proposals.

What the available numbers tell us about 2027

KFF’s 2025 Employer Health Benefits Survey reports average annual premiums of $9,325 for single coverage and $26,993 for family coverage. These include both employer and worker contributions. They are historical national benchmarks, not published 2027 rates.

Aon’s August 2026 forecast projects a 9.5% employer health care cost increase for 2027 before cost-management changes. A forecast describes expected movement across a population. It does not establish a minimum or maximum renewal increase for an individual business.

Keep three different numbers separate
NumberUseful forCannot tell you
Historical national premiumUnderstanding the scale of coverage spendingYour local carrier’s 2027 price
Industry trend forecastPreliminary budget scenariosYour final renewal or employee deductions
Your renewal proposalEvaluating an actual offer for your groupFuture enrollment mix or every transition expense

Do not multiply a family premium by your entire headcount unless every enrolled employee actually elects family coverage. Do not compare a statistic measuring employer spending with one measuring the full premium. The labels matter as much as the dollar amounts.

Build the budget from enrollment and coverage tiers

Pull the current invoice, employee contribution schedule, and enrollment roster. Reconcile them before forecasting. For each plan and coverage tier, record the number enrolled, total monthly premium, employer share, and employee share. Separate employee-only, employee-plus-spouse, employee-plus-children, and family tiers wherever the carrier uses them.

A workable starting formula is:

Annual employer premium budget = sum of each tier’s monthly employer contribution × enrolled employees in that tier × covered months.

Then add employer HSA or HRA funding and separately charged administration or consulting costs. Avoid adding a fee again if it is already included in the quoted premium. For self-funded coverage, use a separate model for claims and stop-loss costs; a premium-only worksheet is insufficient.

Keep “eligible,” “enrolled,” and “total employees” in separate columns. A waived employee may cost nothing in the current insurance invoice but enroll next year. A planned hire may enter midway through the year. Budgeting everyone for twelve months can overstate one scenario, while assuming no new enrollment can understate another.

For a first-time benefits offering, request a census-based proposal and model multiple take-up assumptions. Ask about anticipated coverage elections without asking managers to collect diagnoses or detailed medical histories.

A worked example: a 20-person company

Assume a business has 20 employees and expects 15 to enroll for all twelve months: ten in employee-only coverage and five in family coverage. The following prices and contribution percentages are invented solely to demonstrate the method.

Illustrative 2026 baseline
TierEnrolledMonthly premiumEmployer shareAnnual employer cost
Employee only10$80075% = $600$72,000
Family5$2,20060% = $1,320$79,200
Total15——$151,200

If enrollment and employer percentages stay unchanged, the premium budget moves in direct proportion to the renewal rate. Model more than one outcome:

Illustrative 2027 sensitivity analysis, not market forecasts
Assumed increaseEmployer premium budgetIncrease in dollars
6%$160,272$9,072
9.5%$165,564$14,364
13%$170,856$19,656

In the middle scenario, employee-only coverage costs $876 a month and the employer pays $657. Two new employee-only enrollments beginning July 1 add $7,884: two people × six months × $657. The resulting employer premium budget becomes $173,448 before other costs.

That hiring adjustment is more useful than debating whether the national trend should be rounded to 9% or 10%. Run the same exercise for a shift from employee-only to family coverage, departures, and employees who currently waive coverage.

Include costs the renewal percentage leaves out

Account funding. If the business contributes $750 to an HSA for each of twelve eligible participants, set aside $9,000 separately. Specify when deposits happen. A January deposit creates a different cash need from monthly funding. See our 2027 HSA guide before setting payroll elections.

Implementation work. A carrier change can require enrollment support, payroll changes, employee meetings, and time resolving provider or prescription questions. Put an internal owner and deadline beside each task even when no outside invoice is expected.

Funding risk. A level-funded proposal may combine administration, stop-loss premiums, and claims funding. Request the contract’s maximum financial obligation, timing requirements, and termination provisions. Do not treat a possible surplus refund as guaranteed income in the operating budget. Our funding comparison explains the questions to ask.

Employee affordability. Show the annual and per-paycheck change for every tier. A budget that looks manageable for the employer can produce an enrollment problem if family deductions rise sharply. Compare employee premium contributions with likely out-of-pocket exposure, not premiums alone.

Compare proposals without hiding benefit reductions

Put each proposal on one page using the same enrollment census. Record network name, service area, deductible, out-of-pocket maximum, prescription coverage, employer contribution, employee deductions, and employer account deposits. The CMS Summary of Benefits and Coverage guidance explains the standardized documents that help compare benefit designs.

Use two comparisons. First, hold benefits and contributions as close to constant as possible to understand the price change. Then evaluate deliberate design changes. This prevents a higher deductible from being presented as a carrier discount.

If one option costs $18,000 less but removes a hospital system used by several employees, identify that tradeoff directly. If another option saves $12,000 in premium and adds $8,000 in HSA funding, the employer’s net improvement is $4,000 before fees and enrollment changes. Employees may still experience the plans differently.

Ask for a written explanation of rate guarantees, quote expiration, enrollment assumptions, and conditions that permit repricing. Identify what remains provisional instead of silently treating every quote as final.

A practical renewal calendar

  1. About 120 days before renewal: reconcile the census and invoices, agree on the employer’s dollar budget, and list employee experience problems to solve.
  2. About 90 days before: obtain renewal information and comparable alternatives. Identify missing documents and set a deadline for firm terms.
  3. About 60 days before: decide the plan lineup and contribution approach. Complete affordability and plan-document reviews with the appropriate advisers.
  4. About 30 days before: communicate deductions, networks, benefit changes, enrollment deadlines, and where to get help.
  5. After the first payroll and invoice: reconcile elections against deductions and carrier enrollment. Correct discrepancies before they repeat.

These are planning targets, not universal legal deadlines. Carrier lead times and notice requirements can differ. Work backward from the effective date and confirm required deadlines with the administrator.

Questions employers ask about 2027 costs

Should every employer budget a 9.5% increase?

No. Use the forecast as one reference point. Your renewal, location, plan design, enrollment, and contribution policy should drive the final budget. Keep a higher-cost scenario visible until the rates and assumptions are firm.

Does a higher deductible always save the employer money?

Not after every other decision is included. A lower premium may be partly offset by an HSA contribution, transition expenses, or different enrollment. Compare the complete package before calling the change a saving.

What should we bring to a benefits review?

Bring the current invoice, renewal proposal, enrollment by tier, employee deduction schedule, Summary of Benefits and Coverage, and anticipated hiring. Add a short list of network or service problems. These materials let you move from national averages to decisions grounded in your business.

Sources & publication notes

Sources checked September 27, 2026. Figures identified as examples are original illustrations, not quotes or client results.

  1. KFF: 2025 Employer Health Benefits Survey

    Historical national premium benchmarks, not 2027 quotes.

  2. Aon: 2027 employer health care cost forecast

    August 20, 2026 forecast; projected increase before mitigation.

  3. CMS: Summary of Benefits & Coverage

    Standardized benefit comparison documents.

This educational guide is not a plan document or individualized tax, legal, or insurance advice; confirm requirements for your employer and coverage before acting.