Coinsurance calculator
Enter a covered bill and the plan's deductible and coinsurance to see what the insured and the plan each pay. Everything updates as you type.
The insured pays
$2,800
$1,000 deductible + $1,800 coinsurance
- Deductible paid
- $1,000
- Coinsurance at 20%
- $1,800
- Plan pays
- $7,200
Cost-sharing drill
The exam asks these as word problems. Practice by hand, one fresh question at a time.
Work it out on paper first, as on exam day, then check.
The order of cost sharing
| Step | What happens | Example, 80/20 plan |
|---|---|---|
| 1. Deductible | The insured pays covered charges until the deductible is met | $1,000 of a $10,000 bill |
| 2. Coinsurance | The rest is shared: the plan pays its percent, the insured the remainder | 20% of $9,000 is $1,800 |
| 3. Out-of-pocket maximum | Once the insured's share reaches the maximum, the plan pays 100% | A $2,500 maximum caps $2,800 at $2,500 |
Then the whole exam
The free diagnostic has 15 questions across all seven areas, including Texas law, and takes 16 minutes. No account. You get your score in each area and a short lesson on the one to fix first.
Questions people ask
How do you calculate coinsurance?
Take the covered charges, subtract the deductible still to be met, and multiply what is left by the insured's share. On an 80/20 plan with a $1,000 deductible, a $10,000 bill costs the insured $1,000 + 20% of $9,000 = $2,800.
What does 80/20 coinsurance mean?
After the deductible, the plan pays 80% of covered charges and the insured pays 20%, until the out-of-pocket maximum is reached.
What is the difference between a deductible and coinsurance?
The deductible is a fixed amount the insured pays before the plan shares costs. Coinsurance is the percentage split of covered charges after the deductible.
Can you use a calculator on the insurance exam?
In Texas, yes, if it is silent, hand-held, nonprinting and has no alphabetic keypad. Financial calculators are not allowed.