How this is calculated
The arithmetic here is intentionally simple. Sum every monthly amount. Multiply by 12 for the year. Multiply by 10 and 30 for the long horizons. That's it. No inflation adjustment, no investment-return forecast, no compound interest fairy dust. We've seen those models in other tools and they obscure the point: the headline number is shocking enough on its own, and adding assumptions makes it easier for someone to argue with the assumptions instead of with the bill.
The lifetime numbers are presented in nominal dollars — the literal amount of money that will leave your bank account if your subscriptions stay flat at today's prices for the period in question. Real subscription prices tend to rise faster than inflation, so the nominal number is a slight underestimate. We made that trade-off on purpose. Subtracting an inflation forecast would lower the number; adding price-increase forecasts would raise it; the two roughly cancel and the simple multiplication is honest.
The more interesting question this calculator pushes you toward is the opportunity-cost question. The thirty-year total is the amount of money you'd have if instead of subscribing, you kept the money. Whether that hypothetical pile would have grown via investment is a separate calculator — try a compound interest tool if you want to see what those numbers do at 7% real returns. Spoiler: they roughly triple over 30 years. If your monthly subs total $200, you're looking at a lifetime opportunity cost north of two hundred thousand dollars in today's money once you factor in compounding. The number on this page is conservative.
A few notes on inputs. Enter the price you actually pay, not the headline price. If you split Netflix four ways with friends, enter your share. If your gym is $50 a month for ten months and free for two, enter $42. If a service is annual, divide by twelve. Don't try to game the calculator by leaving things out — the value is in seeing the full picture, not the optimised one.
We deliberately don't have categories or filters. Most subscription audit tools group services into "essentials" and "non-essentials", which lets people rationalise. Everything in the list is a choice. Some of those choices are worth it (your work-critical software, the gym you actually use, the insurance you actually need). Others are not. The calculator doesn't care which is which — it just shows you the bill. You decide.
The "forgotten subscriptions" problem is the real one. Studies consistently find that the average American underestimates their monthly subscription spending by 2x to 3x. Bank statements tell the truth. Before filling this out, spend ten minutes scrolling through your last three months of card and bank charges. You will find at least one subscription you didn't remember you had. That, alone, is worth your time here.
A related pattern is the trial-converted-to-paid problem. Many services bill at a discounted rate for one to three months, then quietly increase. If you signed up at $4.99 and have been there a year, you're probably paying $14.99 now. Use the current charge from your statement, not what you thought you signed up for.
Finally, the calculator doesn't ask whether a subscription is worth it. That isn't a number we can compute for you. The honest test is roughly: "if this subscription canceled itself tomorrow, would I sign up again at this price?" If the answer is no, you have your decision. The decade and lifetime numbers exist to make that question harder to dodge.
Two small habits help if you do this audit annually: cancel anything you couldn't justify above, and put any meaningful new subscription into a calendar reminder for the same day next year. Subscription churn is the easiest free money in personal finance. The hard part is just looking.