COBRA vs Marketplace Health Coverage Cost Calculator

Enter the premium actually payable

For COBRA, use the full amount on the continuation notice or a confirmed administrator quote. Your former paycheck deduction may not represent what you would pay after employment ends. Include required charges already shown in the notice once; do not add a second administrative fee on top of an all-inclusive figure.

If your former employer will temporarily pay part of the premium, enter the documented contribution for the months it applies. For the Marketplace plan, enter the quoted gross premium and a confirmed or clearly labeled scenario credit. If you use a net premium instead, leave the separate credit at zero to avoid subtracting it twice.

This tool does not infer assistance from income, household size or employment status. KFF's Marketplace calculator describes the data needed for an eligibility and premium estimate. Use an official Marketplace determination for enrollment decisions.

Continue with COBRA vs ACA Marketplace Coverage: Comparing Actual Annual Costs or Insurance Comparison Checklist: Premium, Limits, Exclusions and Renewal Terms for the next calculation.

Use remaining deductible amounts

Ask the current plan administrator how deductible and out-of-pocket progress apply under continuation coverage. For the replacement plan, use its actual starting balances. A new plan may begin with a different deductible and different benefits.

Money already spent is not added to the future cost comparison. Its relevance is the amount of deductible or out-of-pocket exposure still remaining. Simply adding all lost deductible progress to a Marketplace premium can overstate the switching cost, especially if little further care is expected.

The calculator applies the remaining deductible to entered covered, in-network allowed charges, then applies your coinsurance rate. Eligible cost-sharing is capped at the remaining out-of-pocket maximum. Premiums and excluded services remain outside that cap, consistent with HealthCare.gov's explanation of total plan costs.

Worked example: six months in one plan year

Assume six remaining months within one plan year and $10,000 of future deductible-subject allowed charges. There are no separate copays, excluded services or employer contributions in this illustration.

COBRA cost-sharing is $500 + 20% × $9,500 = $2,400. Marketplace cost-sharing is $3,000 + 20% × $7,000 = $4,400. Neither reaches its remaining maximum. The Marketplace scenario is $400 lower under these inputs.

With no future care, the cost difference is the $2,400 premium saving. At very high covered spending, the respective totals could reach $7,300 and $9,400 before any excluded costs. The plan with the lower premium is therefore not automatically the lower-cost option at every spending level. These figures are hypothetical, not current plan prices.

Check whether a plan-year reset occurs

A comparison that crosses a deductible reset needs a separate segment for each plan year. Enter the spending expected in each segment and that year's applicable deductible, maximum and premium. Do not multiply an annual deductible by six-twelfths merely because you need six months of coverage.

A short period with a planned procedure may have more spending than a longer healthy period. Use a timing-specific estimate rather than spreading annual medical costs evenly without considering expected care.

Eligibility and timing are separate

Confirm enrollment windows, effective dates and the last day of existing coverage before acting. HealthCare.gov's COBRA guidance explains that the ability to switch depends on when and why coverage changes; voluntarily ending COBRA does not by itself create a new Marketplace enrollment opportunity.

Also check provider networks, prescription formularies, authorizations and continuity of ongoing treatment. A numerical cost advantage cannot confirm that a replacement plan provides equivalent access to care.

Frequently asked questions

Quick answer

Continue to Medical Bill Copay Coinsurance Estimator and Insurance calculator hub when the decision extends beyond this worksheet. Browse the insurance calculator hub for a separate task.

Quick answer. COBRA and Marketplace coverage should be compared on total estimated annual spending rather than premium alone. A lower monthly premium can come with a larger deductible or more expensive recurring prescriptions. Subsidy eligibility, networks, covered providers, and whether prior deductible spending carries forward can change the decision. A $650 monthly COBRA premium costs $7,800 before other health expenses over 12 months. Check the applicable source records before treating this as anything beyond an illustrative calculation.

What does this calculator actually measure?

COBRA vs Marketplace Health Coverage Cost Calculator models premiums, employer contribution loss, deductible reset, expected annual outlay. The main decision is: Does COBRA cost more after accounting for deductibles? The value of a worksheet like this is that it keeps cost components, time periods and assumptions separate. Two cases may have the same headline percentage but produce different cash flows once fees, timing, benefit limits or starting balances are accounted for.

This calculator is especially useful when you already have written details about COBRA premium, Marketplace net premium, and deductible remaining in each plan. Enter actual documents where available; if you are considering a proposed change, label hypothetical numbers as hypothetical and compare them with your current arrangement.

How to use this cobra vs marketplace health coverage cost calculator

1. Find the policy declarations and the coverage section applying to this expense or risk.
2. Separate eligible costs from excluded items or services.
3. Enter the remaining deductible, applicable coinsurance/reimbursement and available benefit.
4. Check whether the claim order, waiting period or special deductible changes the outcome.
5. Compare the estimate against the insurer statement or contract before acting.

Calculator inputs explained

• Cobra premium: A monetary cost paid now or over time. Specify whether it is already included in another amount to avoid counting it twice.
• Marketplace net premium: A monetary cost paid now or over time. Specify whether it is already included in another amount to avoid counting it twice.
• Deductible remaining in each plan: The remaining policy amount you pay before, or as part of, a covered benefit calculation. Confirm whether it renews annually or per incident.
• Expected covered spending: Use the corresponding business metric from the same channel, cohort, currency and reporting period.
• Copay and coinsurance: The specified percentage applied to the defined eligible cost base, after any deductions required by the plan or policy.
• Comparison months: The number of applicable payment, benefit or reporting periods; actual dates and annualization conventions may change the result.

Keep all money in one currency and all rates and periods consistent. If you convert an annual amount into a monthly figure, show that conversion. When a required term is unknown, do not silently assume the most favorable outcome.

Formula and calculation method

The model for this specific worksheet is: total=month_count*premium+modeled eligible cost-sharing, capped according to each plan; show scenarios, do not infer subsidy eligibility.

Apply exclusions and eligibility before benefit arithmetic. Next apply the stated deductible or waiting period, then the percentage/benefit rule and any remaining cap. Record the portion paid by the person separately from what the insurer is modeled to pay. The tool should retain full internal precision and round displayed currency amounts at the end of each legally or contractually appropriate computation. Show a complete breakdown for users who want to reproduce the result.

Worked example

A $650 monthly COBRA premium costs $7,800 before other health expenses over 12 months. This illustrates the premiums, employer contribution loss, deductible reset, expected annual outlay model using selected inputs, not a binding outcome. The relevant contractual or reporting record controls any additional conditions, ordering or rounding rules.

For a useful comparison, keep all other inputs fixed and change the specific parameter associated with user-entered plan terms, no eligibility guarantee. That reveals whether the difference comes from the underlying base amount, timing, stated rate, cash charges or limits—not from several unexplained changes at once.

Understanding your results

• Annual cost by plan: The intermediate or final result labeled “annual cost by plan”, calculated using the entered scenario and the explicitly stated methodology.
• Difference: The intermediate or final result labeled “difference”, calculated using the entered scenario and the explicitly stated methodology.
• Worst-case member spending: The amount modeled as remaining with the customer or policyholder after the applicable benefit or payment.
• Decision checklist: The intermediate or final result labeled “decision checklist”, calculated using the entered scenario and the explicitly stated methodology.

Review these figures together. Compare a less expensive premium against a larger potential claim payment by the policyholder. Also compare a normal policy period with a year containing multiple claims: deductible and annual-limit carry-forward can change later results. A calculation is more reliable when you can point to the exact input and rule that explains every result.

What can materially change the answer?

The most important constraint for this tool: Enrollment windows and subsidy eligibility must be checked externally; no real Marketplace quotes. Changes to these terms can alter the result even when the numerical inputs otherwise look similar. If the relevant record does not disclose a necessary restriction, treat the output as a partial scenario rather than a complete financial or coverage assessment.

Common errors to avoid:

• Assuming all expenses or events are covered simply because they are listed on a bill.
• Applying a reimbursement percentage before checking the deductible, limit or eligible base.
• Using premium price as a substitute for reviewing benefit exclusions and claim rules.

How reliable is this estimate?

An illustration cannot confirm coverage, binding quotes, claims adjustment, underwriting eligibility or jurisdiction-specific protection. The actual policy and insurer determination control. The calculation does not retrieve live information automatically. The owner should use their own verified documents and check changing rules or annual limits before using the result in a consequential decision. CalculatorGeek's methodology should remain visible alongside the tool results.

Inputs, outputs and result meaning

Compare entered COBRA and Marketplace premium and cost-sharing scenarios without inferring subsidy or enrollment eligibility.

Inputs

Market and currency

This worksheet models US COBRA and Marketplace plan terms only. Available choices are United States (USD).

Comparison months

Supported units are count.

Expected covered allowed spending during the period

Supported units are selected currency.

COBRA monthly premium

Supported units are selected currency.

COBRA remaining deductible

Supported units are selected currency.

COBRA coinsurance after deductible

Supported units are percent (%).

COBRA modeled copays for the period

Supported units are selected currency.

COBRA remaining out-of-pocket limit

Supported units are selected currency.

Marketplace net monthly premium entered

Supported units are selected currency.

Marketplace remaining deductible

Supported units are selected currency.

Marketplace coinsurance after deductible

Supported units are percent (%).

Marketplace modeled copays for the period

Supported units are selected currency.

Marketplace remaining out-of-pocket limit

Supported units are selected currency.

Outputs

Lower-plan modeled cost difference

This is the primary result. The display rule uses up to 2 decimal places.

COBRA modeled total cost

The display rule uses up to 2 decimal places.

Marketplace modeled total cost

The display rule uses up to 2 decimal places.

Marketplace minus COBRA total

The display rule uses up to 2 decimal places.

Lower plan code

The display rule uses up to 0 decimal places.

COBRA premium outlay

The display rule uses up to 2 decimal places.

Marketplace premium outlay

The display rule uses up to 2 decimal places.

COBRA modeled cost sharing

The display rule uses up to 2 decimal places.

Marketplace modeled cost sharing

The display rule uses up to 2 decimal places.

COBRA premium plus remaining OOP limit

The display rule uses up to 2 decimal places.

Marketplace premium plus remaining OOP limit

The display rule uses up to 2 decimal places.

compare premium outlay, modeled cost sharing and remaining out-of-pocket exposure using plan terms entered from the same date. Keep the result label, unit, selected mode, and stated limitations together when sharing the answer.

Related CalculatorGeek reading

• COBRA vs ACA Marketplace Coverage: Comparing Actual Annual Costs
• Insurance Comparison Checklist: Premium, Limits, Exclusions and Renewal Terms

Sources and methodology

The calculation is original scenario arithmetic. These resources explain relevant rules or concepts; they do not supply live values for your personal case.

• HealthCare.gov plan total cost guidance

Related CalculatorGeek pages

• COBRA vs ACA Marketplace Coverage: Comparing Actual Annual Costs
• Insurance Comparison Checklist: Premium, Limits, Exclusions and Renewal Terms
• Medical Bill Copay Coinsurance Estimator
• Insurance calculator hub