A prepaid term lowers your monthly rate in exchange for money paid upfront that is generally non-refundable once compounded medication ships. This calculates what the discount saves against what it puts at risk, and how long you would need to stay on treatment for it to pay.
The answer usually depends less on the arithmetic than on where you are: prepaying during titration means paying in advance for a dose you may not tolerate.
The question to ask before prepaying
Does the discounted rate hold for the whole term or revert at renewal? What happens if a clinician stops your prescription mid-term? What is refundable before the first shipment? Get all three in writing.
Titration is the wrong time
Roughly the first two to three months is when intolerance ends treatment. Once you are stable at a maintenance dose you intend to hold, the risk profile of a prepaid term changes completely.
Refunds after shipment
Compounded medication is generally not returnable once dispatched, which is a pharmacy-law reality rather than a hostile policy. Plan around it rather than expecting an exception.
The assumptions behind this calculator
Every figure here rests on one escalation model: four weeks at 2.5 mg, four weeks at 5 mg, then your chosen maintenance dose for the remainder. That model is stated so you can disagree with it. If your prescriber repeats a step for tolerability — which roughly a third of patients do — add a month at the lower rate. If you escalate past 10 mg, use the higher band, because dose-scaled programs reprice you there.
Membership fees are folded into the monthly figures wherever a program charges one, because an advertised medication price that excludes a recurring platform fee is not comparable to one that has no such fee. Prepaid-term discounts are not applied: these are monthly-plan figures, and prepaying typically lowers the rate while making the commitment effectively non-refundable once medication ships.
A worked example
Take a patient who titrates normally and settles at 10 mg. On the cheapest tracked route, Oak Longevity, that is about $199 a month at maintenance and roughly $2,388 across a first year. On a dose-scaled program advertising below $153 at entry, the same patient can finish the year higher, because ten of those twelve months are billed at a maintenance rate the advertisement never quoted. That reversal is the single most common pricing surprise in this market and it is what these tools exist to surface.
What this tool cannot tell you
Whether tirzepatide is appropriate for you, what dose you will end up on, whether a program ships reliably, or whether its clinical oversight is adequate. It is a budgeting instrument built on published prices, not a recommendation. Read the program's review and run the verification checks before enrolling anywhere it surfaces.
Where the numbers come from
The same dataset that generates every table on this site, loaded into your browser as a static file. Nothing you enter is transmitted anywhere, no account is required, and the underlying data is downloadable with a verification date on every record. If you find an error in it, the corrections process is the fastest route to having it fixed for everyone.
Re-run this annually
Prices in this market have moved repeatedly, and programs do not notify existing patients when a cheaper tier appears. An annual re-run at your actual maintenance dose is worth more than most of the optimization patients attempt elsewhere.
How to use this alongside the other tools
Each tool answers a different question and they are meant to be used in sequence. The dose planner tells you when you will reach a maintenance dose. The projector tells you what a year at that dose costs across the market. The savings calculator tells you what switching would be worth if you are already enrolled somewhere. The brand comparison puts a number on what FDA approval status costs you. And the matcher ranks programs against all of it at once.
The numbers these tools will not flatter
They include membership fees, which many advertised prices exclude. They price the maintenance dose rather than the starter dose, which is where dose-scaled programs look worse than their homepages suggest. And they show twelve-month and multi-year totals rather than monthly figures, because a monthly figure is how a large annual commitment gets made without being noticed. If a result here is higher than what you were quoted, the difference is usually one of those three.
Sanity-checking the output
Two checks catch most errors. First, does the cheapest result match the cheapest tirzepatide ranking? It should, because both read the same dataset. Second, does the monthly figure match what the program's own page states at your dose? If it does not, our record may be stale — every one carries a verification date, and telling us is the fastest way to get it fixed. Entry pricing across tracked compounded programs currently runs $133 to $399; a result far outside that band is worth questioning.
Why these tools do not ask for your email
Every comparable calculator in this market gates its result behind contact details, because the result is the bait and your details are the product. Ours run entirely in your browser against a static dataset, collect nothing, and require no account. If a tool elsewhere will not show you a number without an email address, the number is not the point of the tool.
What to do with the output
Take the twelve-month figure at your expected maintenance dose to the program you are considering and ask them to confirm or correct it in writing. That single email does more than any amount of comparison reading: it forces a specific, dated, attributable number out of a market that prefers to quote starter prices. If their answer differs from ours, send it to corrections and we will verify and update the record.
Frequently asked questions
Can I get a refund if I stop early?
Generally not once medication has shipped. Terms vary and should be read before paying.
Is prepaying ever the wrong call at maintenance?
If your dose or programme is likely to change, or your income is irregular, monthly billing buys flexibility that is worth real money.
Sources
- Program pricing as published by each provider and recorded in our pricing dataset, with the verification date shown on every table.
- US prescribing information for tirzepatide (Zepbound and Mounjaro), Eli Lilly and Company — dosing, storage, warnings and contraindications.
- Full source ledger — every primary source with a live link, what it supports, the date we read it, and the claims we deliberately do not source.