# Employer contribution strategy calculator

Source: https://www.getprescience.com/tools/employer-contribution-strategy-calculator
Author: Rishab Jain, Cofounder and CEO, Prescience
Published: 2026-11-11
Updated: 2026-11-11
Cite as: Rishab Jain. "Employer contribution strategy calculator." Prescience, November 11, 2026. https://www.getprescience.com/tools/employer-contribution-strategy-calculator

The contribution strategy decides the employer's budget, who enrolls and what families pay, often more than the plan choice does. Enter the enrollment and premium for each tier and compare a percentage of every tier, a percentage of the employee-only rate, and a flat dollar amount side by side.

- **Strategies compared:** 3, on the same enrollment
- **Tiers:** Employee, spouse, children, family
- **Common floor:** 50% of employee-only premium
- **Affordability test:** Employee-only cost

## Compare contribution strategies

_Interactive calculator: open the page in a browser to use it. The rules and figures it applies follow._

Enter how many employees are enrolled in each tier and the monthly premium for that tier, then the employer's percentage and a flat amount. The table prices all three strategies at once. The default is an 18-person enrollment: 10 employee-only, 3 employee and spouse, 2 employee and children, and 3 family, with a 70% contribution and a $600 flat amount.

Everything runs in the browser. The numbers you enter never leave the page.

## The three strategies

- **A percentage of every tier.** The employer pays, say, 70% of whatever tier the employee picks. It is the most generous to families and the most expensive for the employer, and the employer's cost moves with every enrollment change and every renewal.
- **A percentage of the employee-only rate.** The employer pays 70% of the employee-only premium no matter which tier the employee picks, and the employee pays everything above it. Single employees get the same deal as the first strategy; families pay much more. This is the most common way small employers keep a budget under control.
- **A flat dollar amount.** The employer pays a fixed amount toward any tier, never more than the premium. The employer's cost is predictable and does not rise at renewal until the employer decides to raise it; employees absorb the renewal in the meantime.

There are variations: a higher percentage for employee-only coverage and a lower one for dependents, or a percentage of the cheapest plan's premium with employees paying the difference to buy up to a richer plan. Each is a blend of the three above, and the calculator's columns show the edges of the range.

## A worked comparison

**18 enrolled employees, three ways**

Illustrative premiums. Employee only $650 a month (10 enrolled), employee and spouse $1,360 (3), employee and children $1,230 (2), family $1,950 (3). Total premium $18,890 a month. The employer is weighing 70% of every tier, 70% of the employee-only rate, and a flat $600.

- 70% of every tier: employer a year: $158,676
- Family employee pays a month: $585
- 70% of employee-only ($455 for every tier): employer a year: $98,280
- Family employee pays a month: $1,495
- Flat $600: employer a year: $129,600
- Family employee pays a month: $1,350

The employee-only base costs the employer $60,396 a year less than 70% of every tier, and every dollar of that difference is paid by the 8 employees who cover dependents. Single employees pay $195 a month under both percentage strategies. The flat $600 sits in between for the employer, is the best deal for single employees ($50 a month) and still leaves a family paying $1,350.

None of these is the right answer on its own. The question for the client is who they are trying to attract and keep. A company hiring senior engineers with families will lose candidates at $1,495 a month; a company of mostly single employees in their twenties may spend the difference better elsewhere.

## Rules that limit the choice

- **The carrier's minimum contribution.** Most small group carriers require the employer to pay at least 50% of the employee-only premium. All three strategies need to clear it; a flat amount that falls below half the employee-only rate after a renewal can put the group out of compliance with the carrier's rule.
- **Participation.** Families who are priced out decline, and single employees who are priced out drop the group below the participation minimum. Check the result in the [participation calculator](https://www.getprescience.com/tools/group-health-participation-calculator).
- **ACA affordability for employers with 50 or more full-time equivalents.** Affordability is measured on the employee's cost for the lowest-cost employee-only coverage, not family coverage. An employee-only base strategy can be affordable for the employer-mandate test while family coverage costs a great deal.
- **The family glitch fix.** Since 2023, family members' eligibility for marketplace subsidies is tested on the cost of family coverage. When family coverage is expensive, spouses and children may qualify for subsidized individual coverage while the employee stays on the group plan.
- **Consistency within classes.** Contributions can differ between bona fide classes, such as full-time and part-time, but should be the same within a class. A self-funded or level-funded plan that favors highly paid employees can fail the Section 105(h) nondiscrimination test.

## How each strategy behaves at renewal

A percentage strategy splits every renewal the same way it splits the premium. At 70% of every tier, a 10% renewal is a 10% increase for the employer and a 10% increase for every employee. At 70% of the employee-only rate, families take a larger share of the renewal than their share of the premium, because the employer's part is pinned to the smallest tier.

A flat amount puts the whole renewal on employees until the employer resets it. That is attractive to a CFO and visible to every employee on the first paycheck of the new plan year. If the client uses a flat amount, put a review of it on the renewal calendar so the reset is a decision rather than a reaction.

Our [broker renewal calculator](https://www.getprescience.com/tools/broker-renewal-calculator) prices a renewal against today's share and a proposed one, which is the companion to this page when the client is changing strategy at renewal.

> **Prescience Diamond: A company health plan with an effective $0 deductible.** A fixed quote with the same tiers lets you run each strategy against the renewal and the alternative in one meeting.
> - **An effective $0 deductible** and simple copays shown before a visit
> - **A broad national PPO network,** plus providers we contract with directly
> - **24/7 physician-led care navigation** that books visits and explains costs
> - **Usually 10–20% below comparable fully insured coverage,** fixed in your quote, with no admin fees
> Best for teams of about 15 or more that want one great group plan. [Get a Diamond quote](https://www.getprescience.com/get-started?p=Employer&product=diamond)

## Taxes on the employee's share

The employer's contribution is excluded from the employee's income. The employee's share can be paid pre-tax too, but only through a Section 125 cafeteria plan, usually a simple premium-only plan document. Without one, employees pay their share with after-tax dollars, which makes a family's $1,495 cost noticeably more in take-home pay.

If the client doesn't have a premium-only plan, setting one up is the cheapest improvement available: it lowers payroll tax for the employer and income and payroll tax for employees on the same premium. Our [Section 125 calculator](https://www.getprescience.com/tools/section-125-tax-savings-calculator) estimates the difference.

## Presenting the choice to a client

Clients usually arrive with a number in mind, a percentage someone told them was standard, rather than a strategy. Show them the three columns before they commit to one, and anchor the conversation on two employees: a single employee earning the company's lowest wage and an employee covering a family.

Ask what the company is trying to do with the plan. If it is recruiting experienced hires, family cost is the number candidates compare. If it is keeping a young team covered, the employee-only cost and participation matter most. If the CFO wants a fixed line in the budget, a flat amount does that, with the renewal risk passed to employees.

Write the strategy down in the plan's documents and the offer letters the same way. A strategy that exists only in a spreadsheet is hard to explain at the next renewal, and harder to change without employees feeling the change was hidden.

**Price the contribution strategy against actual coverage**

Use the same employee tiers and effective date for each proposal. Compare the written premium and employee costs with the employer budget you modeled before choosing the contribution policy.

[Price my contribution strategy](https://www.getprescience.com/quote)

[Prepare the employee census](https://www.getprescience.com/integrations)

## What this calculator leaves out

It prices one plan. If the client offers several plans, run it once per plan or use the premiums of the plan most employees choose. It assumes everyone stays in their tier; in practice a large rise in the family cost moves some families to a spouse's plan, which lowers the employer's cost and also the plan's participation.

It does not include an HSA or HRA contribution, which some employers pair with a lower premium contribution. Add those to the employer's cost separately when you compare.

## Frequently asked questions

**How much should an employer contribute to health insurance?**

Most small group carriers require at least 50% of the employee-only premium. Beyond that it's a budget and recruiting decision. KFF's survey finds employers pay a larger share of single coverage than of family coverage on average.

**What is an employee-only base contribution strategy?**

The employer pays a set percentage of the employee-only premium for every tier, and employees pay the rest of their tier's premium. It caps the employer's cost per employee and moves the cost of dependents to the employee.

**Is a flat dollar contribution allowed?**

Yes, as long as it meets the carrier's minimum contribution rule, usually 50% of the employee-only premium. Check the rule again after each renewal, since a flat amount doesn't rise with the premium.

**Does the contribution strategy affect ACA affordability?**

For employers with 50 or more full-time equivalents, affordability is tested on the employee's share of the lowest-cost employee-only coverage. Dependent coverage doesn't enter the employer test.

**Can contributions differ between employees?**

They can differ between bona fide classes, such as full-time and part-time employees, but should be uniform within a class. Self-funded and level-funded plans must also pass Section 105(h) nondiscrimination testing.

**Can employees pay their share pre-tax?**

Yes, through a Section 125 cafeteria plan. A premium-only plan is enough and is simple to set up.

## Sources

- [KFF, 2025 Employer Health Benefits Survey](https://www.kff.org/health-costs/2025-employer-health-benefits-survey/)
- [IRS, Employer shared responsibility provisions](https://www.irs.gov/affordable-care-act/employers/employer-shared-responsibility-provisions)
- [IRS, Questions and answers on the premium tax credit (family member affordability)](https://www.irs.gov/affordable-care-act/individuals-and-families/questions-and-answers-on-the-premium-tax-credit)
- [26 CFR 1.125-4, Permitted election changes](https://www.ecfr.gov/current/title-26/section-1.125-4)
- [45 CFR 147.104, Guaranteed availability of coverage (participation and contribution rules)](https://www.ecfr.gov/current/title-45/subtitle-A/subchapter-B/part-147/section-147.104)