Group dental cost & ROI calculator
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✶ The case
Why the ROI is really a turnover story
A dental plan for ten people costs a few thousand dollars a year. Replacing one employee costs far more. Research puts the cost of replacing a worker at roughly 20% of salary for entry roles (Center for American Progress), about one-third of salary as an all-in figure (Work Institute), and 50% to 200% of salary for skilled and senior roles (SHRM, Gallup). Run the math for a typical ten-person firm and voluntary turnover quietly costs roughly $12,000 to $28,000 a year.
That reframes the decision. The dental plan does not have to "create" loyalty out of thin air. It only has to nudge retention slightly, because the cost of even one avoided departure dwarfs the annual premium. Benefits are associated with that nudge: employees with dental coverage are about 17% more likely to plan to stay and 18% more likely to be satisfied (MetLife survey data, correlational), and 70% of workers say benefits were an essential reason they joined their employer, up from 57% in 2017 (WTW).
Honest framing: these are associations from survey research, not a guaranteed causal effect for any one employer. We do not claim dental "causes" a fixed retention gain. The point is asymmetry: the plan is cheap, turnover is expensive.
✶ The money back
The true cost is lower than the sticker
Pre-tax payroll (Section 125)
When employees pay their share pre-tax through a Section 125 plan, the employer avoids its matching 7.65% FICA on every one of those dollars, and the employee saves roughly 30% (income tax plus FICA). Setting up the plan can be cash-positive for the employer.
It's deductible
Employer dental contributions are an ordinary, necessary, tax-deductible business expense (IRS Pub. 334). For a C-corp at 21%, every $100 contributed costs about $79 after the deduction.
SHOP tax credit (upside)
Firms under 25 full-time-equivalent employees with lower average wages that pay at least 50% and buy through SHOP can claim up to 50% of contributions as a credit for two years. Availability is limited; treat it as a bonus, not a default.
Group beats individual
A group pool avoids the adverse selection that inflates individual-market rates by roughly 40% (Academy of Actuaries). The same coverage is simply cheaper bought through the employer.
Tax outcomes depend on entity type, payroll, and state. These are estimates; consult a qualified tax advisor or CPA.
✶ Economist's brief
Why a benefit dollar beats a wage dollar
A benefit can make the employer and the worker better off at the same time, because a dollar does more work as a benefit than as cash. Six standard principles from labor and public economics explain why.
- Total compensation. Workers value the whole package, not just wages. Benefits are about 30% of total compensation (BLS), so offering none advertises a far smaller package than the wage alone suggests.
- The tax wedge. Wages are taxed by income and payroll tax on both sides; qualifying benefits are excluded. A pre-tax benefit dollar reaches the worker undiluted, so the same value costs the employer fewer pre-tax dollars.
- Compensating wage differentials (Adam Smith, 1776). A job with a valued benefit can clear at a lower cash wage. Offering dental lets you compete on total pay for less salary than a no-benefits rival must pay.
- Efficiency wages and turnover (Shapiro-Stiglitz; Akerlof). Paying above-market total compensation reduces costly quitting and is reciprocated with effort. A benefit is a cheap way to lift the package above the market floor.
- Group risk pooling (Akerlof's lemons, 1970). Employer groups avoid the adverse selection that unravels individual markets, so the insurer prices lower; group coverage is cheaper than everyone buying solo.
- Behavioral prevention (RAND HIE). People under-buy prevention because the cost is now and the payoff is later. First-dollar preventive coverage corrects that, improving health and lowering later claims.
The strongest peer-reviewed evidence (RAND, the tax-exclusion literature, risk pooling) is from health insurance; dental magnitudes are weaker, so these are applications of the principles, not dental-specific guarantees.
✶ Track it
Workforce KPIs a benefit should move
If you offer dental to retain people, watch the numbers it is meant to affect. Current US benchmarks:
Only 30% of workers at firms under 100 employees get dental, versus 70% at firms over 500 (BLS). For a small business, offering it is a genuine recruiting differentiator, not just a cost.
Ready to see real numbers for your team?
Tell us your headcount and what matters most. We configure a concierge comparison and route covered employees to a vetted dentist.
✶ How we know
Sources and method
The calculator's defaults and the analysis above are drawn from public benchmarks and reconciled in CoverCapy's internal cost-and-ROI model file, June 2026. No carrier publishes group premiums, so all dollar outputs are market-average estimates.
- Premiums & take-up: NADP; KFF Employer Health Benefits Survey 2025; eHealth; MoneyGeek 2026.
- Turnover cost: Center for American Progress; Work Institute; Gallup; SHRM; BLS JOLTS.
- Retention & demand: MetLife Employee Benefit Trends Study; Willis Towers Watson; SHRM 2025; Fractl/Harvard Business Review.
- Tax: IRS (Topic 751, Pub. 15-B, Pub. 334, SHOP credit); SSA 2026 wage base; HealthCare.gov.
- Productivity: CDC Preventing Chronic Disease 2018; PLOS ONE/NHANES 2021; ADA Health Policy Institute; Guardian Workplace Benefits Study 2018 (insurer-sponsored).
- Economics: BLS ECEC; Tax Policy Center; Shapiro-Stiglitz (1984); Akerlof (1970, 1982); RAND Health Insurance Experiment; American Academy of Actuaries.