The Perk Index

Is Prime worth it

Amazon Prime Break Even Calculator

Published 2026-09-26 · Last checked 2026-09-26 · 5 min read

6/7TuesdayScore™
  • Every input comes from your own account.
  • Output is a count of orders, not a price quote.
  • Annual plans are converted to a monthly equivalent.
  • Nothing is sent anywhere. The math runs in your browser.

This tool answers one question and refuses to guess at anything else. It takes your own plan cost and the shipping you would otherwise pay, and returns the number of orders per month at which a Prime membership stops being a cost. All the arithmetic is on this page, and none of it leaves your browser.

As an Amazon Associate I earn from qualifying purchases. Commissions never change a TuesdayScore™. How this site is funded.

How to use it. Enter three things: your membership amount, whether that amount is billed monthly or yearly, and what one shipped order costs you without a membership. Leave the order count blank if you only want the break even line, or fill it in to see which side of the line you are on.

Run your own break even

Every figure below is yours. We do not publish Amazon’s current prices, because those are set by Amazon and change, and a stale number here would be worse than none. Read yours from your own account, then enter it.

Enter your membership amount to start. This tool uses your own figures, because the price Amazon shows you is the one that counts.

The math it runs

Three steps, all visible. First, convert your plan to a monthly figure, which means dividing an annual amount by twelve. Second, divide that monthly figure by the shipping cost of one order. Third, round up, because you cannot place a fraction of an order.

The result is a count, not a price. It answers how many orders a month, and it deliberately does not pretend to know what Amazon will charge you next year.

What goes in

Your plan amount, its billing rhythm, and what one order costs you to ship without a membership.

What comes out

A break even point in orders per month, plus a plain read on whether your own order count sits above or below it.

What this calculator cannot tell you

One more honest limit. A membership can make ordering easier and, by making it easier, make you order more. That is convenience, and it is worth naming, but it is not a saving, so it does not belong in the calculation.

Here is the part nobody says out loud. A calculator is only as honest as its inputs. Ours takes yours, because a published figure would be stale, and a stale figure is worse than none.

Using the result

If you are clearly above the line, the delivery case is settled and the remaining question is which plan to pick, which is monthly versus annual. If you are clearly below it, the honest answer is that shipping alone will not pay for the membership, and the shipping only page walks through what that means.

If you land near the line, the perks decide it. Count only the ones you would pay for as separate subscriptions, and let the rest go.

Buy it if your honest order count clears the number this returns.

Skip it if it does not, and no perk outside shipping would replace what you pay separately. The calculator is not trying to sell you anything. That is why it can say no.

Read the whole calculation in the is Prime worth it guide, then run your own numbers in the break even calculator.

This tool performs arithmetic on the figures you enter. Plan structure, prices, and shipping terms are set by Amazon and described from Amazon’s published help pages, checked 2026-09-26. Verify your own figures against your account.

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