Deductible vs out-of-pocket maximum: how to explain treatment costs to a family

1. The four terms

Term	What it is	Say it like this
Deductible	What the member pays for covered services before the plan pays its share	"The first $[amount left] of covered care this year is yours."
Coinsurance	The member's percent of the plan's allowed amount, after the deductible	"After that, you pay [x]% of the plan's rate and the plan pays the rest."
Copay	A flat amount per visit or day, sometimes before the deductible	"Each visit is a flat $[amount]."
Out-of-pocket maximum	The most the member pays in deductible, coinsurance and copays for covered in-network care in the plan year. Premiums don't count toward it, and neither does out-of-network care or balance billing (HealthCare.gov).	"No matter how long you're in treatment, you won't pay more than $[OOP left] more this year for covered in-network care."

All four are figured on the plan's allowed amount, the plan's rate for the service, not the program's charge (CMS Uniform Glossary). In network, that's your contracted rate.

2. How they work together

1. Deductible first. The member pays the allowed amount of covered care until the deductible left reaches $0.
2. Then coinsurance or copays, claim by claim.
3. Everything they pay counts toward the out-of-pocket maximum, including what they paid toward the deductible.
4. At the out-of-pocket maximum, they pay $0 for covered in-network care for the rest of the plan year.

That's why the out-of-pocket amount left is the honest ceiling for an admission. Quick VOB writes it as a headline, in this exact pattern: "Covered: the client pays at most $3,520 more this plan year. The first $900 is theirs (the deductible left), then 20% coinsurance, up to the out-of-pocket max ($4,500)."

Behavioral health shares the medical deductible. Under the federal parity law, deductibles and out-of-pocket maximums must combine medical and mental health or substance use spending within each classification, so a plan can't make treatment meet its own separate deductible (CMS on MHPAEA). A family that had surgery in March may have very little deductible left in October. Check, don't assume.

3. The 2026 and 2027 limits

These are the ceilings set by law. The plan's own numbers are usually lower; the eligibility check (the 271) gives you the plan's.

Limit	2026	2027	Source
ACA out-of-pocket maximum (in network), individual / family	$10,600 / $21,200	$12,000 / $24,000	HealthCare.gov
HSA-qualified high-deductible plan: minimum deductible, self / family	$1,700 / $3,400	Check the IRS's 2027 figures	IRS Rev. Proc. 2025-19
HSA-qualified high-deductible plan: out-of-pocket maximum, self / family	$8,500 / $17,000	Check the IRS's 2027 figures	IRS Rev. Proc. 2025-19
Original Medicare: Part A inpatient deductible (per benefit period) / Part B yearly deductible	$1,736 / $283	Announced each fall	CMS

Original Medicare has no out-of-pocket maximum; supplemental (Medigap) coverage or a Medicare Advantage plan's own maximum is what caps the cost. For a Medicare member, ask about both before you quote anything.

4. Individual vs family

On family coverage, the 271 usually shows an individual and a family amount for both the deductible and the out-of-pocket maximum.

• Out-of-pocket maximum: the individual cap protects each person. For non-grandfathered plans since 2016, the self-only out-of-pocket limit applies to each individual even inside family coverage (DOL, ACA FAQs Part XXVII). So if the plan's individual out-of-pocket maximum is $4,500, the patient stops paying at $4,500 even if the family total of $9,000 isn't reached.
• Deductible: it can be embedded or aggregate. An embedded deductible has a per-person amount inside the family one; an aggregate deductible must be met by the family as a whole before the plan shares costs for anyone. High-deductible plans often use an aggregate deductible. Ask which, and write it on the VOB form.
• Read both "left" amounts. The patient's cost stops at whichever limit is reached first.

5. Calendar year, plan year and timing

Deductibles and out-of-pocket maximums reset at the start of the plan year: January 1 on a calendar-year plan, or the plan's anniversary date on many employer plans. The 271's plan dates (and an EB06 time qualifier of 23 for calendar year) tell you which. See how to read a 271.

• An admission that crosses the reset date is two years of cost sharing. Days in December count toward this year's out-of-pocket maximum; days in January start over at a full deductible. Tell the family before admission, not on the January statement.
• A member who has already met their out-of-pocket maximum late in the year owes nothing more for covered in-network care until the reset.
• New insurance mid-year (a new job, a marketplace plan, turning 26) usually means new accumulators starting at $0 met. Run a new check.

6. Three worked examples

Made-up members and round numbers, in network, with the authorization in place. "Allowed" is the total of the plan's rates for the stay.

7. Scripts for the phone

Our rule: lead with the ceiling, then explain how you get there, then put it in writing. Never quote before you know the program is in network and the level of care is covered.

The standard money conversation

"I checked your benefits today at [time], and your coverage is active. Here's what it means for you. You have $[deductible left] left on your deductible this year, so that part is yours first. After that, you pay [x]% and your plan pays the rest. The most you can pay this year for covered care with us is $[OOP left], however long treatment takes. Your plan also needs to approve the treatment, and we handle that. I'll email you this in writing."

When they ask "So it's covered?"

"Covered means your plan pays its share once the deductible is met and the treatment is approved. It doesn't mean free. The number to remember is $[OOP left]: that's the most you'd pay this year."

When the deductible is high and nothing is met

"Your plan has a $[deductible] deductible and none of it's met yet, so you'd pay about the first $[deductible] of care. After that, [x]%, and no more than $[OOP left] this year. Our business office can set up a payment plan, and we have a financial-hardship policy if you'd like to apply."

When the out-of-pocket maximum is met

"Good news: you've already reached your yearly maximum, so covered treatment with us is paid in full through [plan end date], as long as the plan approves it."

When the admission crosses January 1

"Your plan year resets on January 1. Days through December 31 count toward this year, where you have $[OOP left] left. Starting January 1, your deductible starts over at $[next year deductible, if known]."

Never say

• "You won't owe anything" (unless the out-of-pocket maximum is met, the program is in network, and the care is authorized).
• "Insurance covers 100%."
• "Don't worry about the deductible, we'll take care of it." Routine waivers of the member's share are a fraud risk; see what not to do.
• Any number from memory, or from a check more than a day old.

8. Put it in writing

After the call, send the family a short written estimate: the date and time of the check, the deductible left, the coinsurance or copay, the out-of-pocket left, the level of care, whether authorization is pending or approved, and a line that benefits are what the plan reported and aren't a guarantee of payment. Keep a copy in part 8 of the VOB form. If the family decides to pay privately instead of using insurance, federal law requires a good faith estimate for self-pay patients (CMS). For out-of-network programs, the estimate needs more lines; see out-of-network benefits.

Quick VOB puts the ceiling first on every check, and the PDF it makes has the deductible and out-of-pocket for both networks, individual and family, ready to send to the family through your secure email. The questions that still need a rep are in the VOB call script.

Questions

What's the difference between a deductible and an out-of-pocket maximum?

The deductible is what you pay before the plan starts sharing costs. The out-of-pocket maximum is the most you'll pay in a plan year for covered in-network care, counting the deductible, coinsurance and copays. Once you reach it, the plan pays 100% of covered in-network care for the rest of the year.

Does the deductible count toward the out-of-pocket maximum?

Yes. What you pay toward the deductible counts toward the out-of-pocket maximum, along with coinsurance and copays for covered in-network care.

What happens after I meet my out-of-pocket maximum?

The plan pays 100% of covered, in-network care for the rest of the plan year. You still pay your premiums, and anything the plan doesn't cover or out-of-network costs aren't capped by it.

Is the out-of-pocket maximum per person or per family?

Family plans have both. Under federal rules for non-grandfathered plans, no one person pays more than the self-only limit, even if the family total isn't met.

Is there a separate deductible for rehab or mental health?

Generally no. Federal parity rules require deductibles and out-of-pocket maximums to combine medical and behavioral health spending within each classification, so treatment counts toward the same deductible as medical care.

What is the maximum out-of-pocket for 2026?

For plans that follow the Affordable Care Act limit, $10,600 for one person and $21,200 for a family for in-network care. For 2027 it's $12,000 and $24,000. Your plan's own maximum is often lower.

Sources

1. HealthCare.gov glossary, "Out-of-pocket maximum/limit" (2026 and 2027 limits; what doesn't count). healthcare.gov
2. CMS, Uniform Glossary of Coverage and Medical Terms. cms.gov
3. Internal Revenue Bulletin 2025-21, Rev. Proc. 2025-19 (2026 HSA and high-deductible health plan amounts). irs.gov
4. CMS, "2026 Medicare Parts A & B Premiums and Deductibles," November 2025. cms.gov
5. U.S. Department of Labor, FAQs about Affordable Care Act Implementation (Part XXVII). dol.gov
6. CMS, "The Mental Health Parity and Addiction Equity Act (MHPAEA)." cms.gov
7. CMS, Good faith estimate required notice for uninsured and self-pay individuals. cms.gov

This guide is general information, not legal, tax or billing advice. Plan terms differ and limits change each year; confirm with each plan and its documents.