Why does the answer differ from a simple doubling?

It should not, and if it does the cause is usually that the marked numbers are rounded. f/11 is really f/11.314 and 1/250 is really 1/256, so working from the printed figures gives slightly wrong stop counts. This page converts to exact values first, which is why f/8 to f/11 comes out as exactly one stop.

Exposure value — a single number combining aperture, shutter and ISO, where each step is one stop. EV 15 is bright sunlight, EV 0 is roughly a dim room, and negative values are night. Two exposures with the same EV pass the same light, whatever combination produced it.

Is it better to raise ISO or use a slower shutter?

Usually raise the ISO. Modern sensors handle high ISO far better than their reputation, and noise can be reduced afterwards — motion blur and camera shake cannot be undone. A clean-but-blurred frame is a lost frame; a noisy sharp one is usually recoverable.

Why do half and third stops exist?

Because full stops are a coarse adjustment — doubling or halving the light. Modern cameras default to third-stop increments so you can fine-tune. This page accepts any value and snaps its answers to settings you can actually dial in.

What will therapy actually cost?

Compare a year of sessions three ways — paying the full fee, seeing an in-network therapist, or going out of network and claiming back with a superbill — with your deductible, copay or coinsurance, and HSA or FSA savings in the picture.

Home › Healthcare › Mental Health › Therapy Cost Estimator

Step 1 — how often

Sessions this year

Therapist's full fee a session $

Step 2 — your insurance

From your plan's summary of benefits, under mental or behavioral health outpatient. Not sure? Call the number on your card and ask these exact questions — they're listed below.

In-network deductible left this year $

After the deductible you pay

Copay a session $

In-network rate a session what the plan pays in total $

Out-of-network benefits

Out-of-network deductible left $

Allowed amount a session the plan's figure, not the fee $

Out-of-network coinsurance %

Paying from an HSA or FSA

Step 3 — a year, three ways

—

Nothing leaves this device

An estimate, not a quote. Plans differ in how they apply deductibles to therapy, whether copays start before the deductible is met, session limits and prior authorisation. Your insurer's answer is the one that counts.

Questions to ask your insurer

What are my in-network benefits for outpatient mental health therapy (CPT code 90837 or 90834)?
Does my deductible apply, and how much of it is left this year?
After the deductible, is it a copay or coinsurance — and how much?
Do I have out-of-network benefits? What is the out-of-network deductible, coinsurance, and the allowed amount for 90837?
Is there a limit on the number of sessions, or any pre-authorisation needed?

A superbill is a receipt your therapist gives you with the codes an insurer needs; you submit it yourself to claim out-of-network benefits. The reimbursement here is the allowed amount, after the out-of-network deductible, times what the plan pays.

Why the cheapest option isn't always obvious

In-network sounds cheapest, and often is — but early in the year the deductible can mean you pay the whole in-network rate for many sessions. A therapist who is a better fit may be out of network, and a superbill can bring the cost down more than people expect once the out-of-network deductible is met. Some therapists offer sliding-scale fees that beat both.

The right therapist matters more than the cheapest one. Use the numbers to know what you can afford, then choose for fit.

Other ways to lower the cost

Ask about sliding-scale fees. Community mental health centres, university training clinics and some nonprofits offer lower-cost therapy. Many employers offer a few free sessions through an Employee Assistance Program (EAP). HSA and FSA money can usually be used for therapy.

Once you've started, the private mood journal and check-ins help you get the most from each session. The guide to tracking your mood between sessions explains how.

Questions people actually ask

What is an allowed amount?

The price your insurer decides a service is worth. Out-of-network reimbursement is based on it, not on your therapist's fee, so if the fee is higher you pay the difference.

Can I use my HSA for therapy?

Therapy for a mental health condition is generally a qualified medical expense for HSA and FSA money. Check your plan's rules.

Is anything I enter saved or sent?

No. The page works it out in your browser and keeps nothing.

What will therapy actually cost?

Why the cheapest option isn't always obvious

Other ways to lower the cost

Related

Questions people actually ask