Subscription Price Increase Calculator: Percentage Change in a Subscription
Work out the percentage increase in a subscription price between two periods — and the dollar difference — so you can see how much a streaming, software, or membership price hike actually costs you per period and per year.
Adjust the inputs and select Calculate for a full breakdown.
Compare Common Scenarios
How the numbers shift across typical situations for this calculator:
| Scenario | Price increase | Dollar change |
|---|---|---|
| $12 to $15/mo (+25%) | 25.00% | 3 |
| $9.99 to $11.99/mo (+20%) | 20.02% | 2 |
| $120 to $144/yr (+20%) | 20.00% | 24 |
| $20 to $25/mo (+25%) | 25.00% | 5 |
How This Calculator Works
Enter the old price and the new price for the same billing period (both monthly, or both annual). The calculator finds the percentage change and the dollar difference. For a monthly subscription, multiply the dollar change by 12 to see the annual impact.
The Formula
Percentage Change
Old is the starting value, New is the ending value
Worked Example
A subscription rising from $12 to $15 a month is a 25% increase — $3 more a month, or $36 a year. Individually small, these hikes add up: a household with several streaming, software, and membership subscriptions can absorb hundreds in annual increases without noticing, because each one looks trivial in isolation. Seeing the percentage and the annualized dollar figure is what makes a 'just a few dollars' increase concrete enough to act on.
Key Insight
Subscription price increases exploit inertia — each hike is small enough to ignore, but they compound across a stack of subscriptions and recur every year. The defense is to treat each increase as a prompt to re-evaluate, not auto-accept: is this still worth the new price, are you actually using it, and is there an annual plan, bundle, or competitor that costs less? Two tactics work well: audit all subscriptions periodically (most people underestimate how many they have and what they total), and use the increase as a natural cancellation trigger for anything you're not really using. Many services also offer retention discounts if you start to cancel, and switching from monthly to annual billing often undoes a hike. The percentage shows how aggressive the increase is; the annualized dollar figure shows whether it's worth the friction to act.
Frequently Asked Questions
How is the subscription price increase calculated?
Subtract the old price from the new price, divide by the old price, and multiply by 100. From $12 to $15 is ($15 − $12) / $12 = 25%, a $3 increase per period.
How do I see the annual impact?
Multiply the per-period dollar change by the number of periods in a year. A $3/month increase is $36 a year. Annualizing turns a 'just a few dollars' hike into a concrete figure that's easier to judge against the value you get.
Why do subscriptions keep raising prices?
Because inertia makes increases easy to push through — each hike is small, and most subscribers don't cancel over a few dollars. Companies rely on this, raising prices regularly. Treating each increase as a prompt to re-evaluate, rather than auto-accepting, is the main counter.
What should I do when a subscription raises its price?
Re-evaluate rather than auto-renew: are you using it, is it still worth the new price, and is there an annual plan, bundle, or competitor that's cheaper? Many services offer retention discounts if you move to cancel, and switching from monthly to annual billing often offsets the increase.
How much do subscription increases add up to?
More than people expect. A household with several streaming, software, and membership subscriptions can absorb hundreds of dollars in annual increases without noticing, because each looks trivial alone. Periodically auditing all subscriptions and their totals reveals the real cumulative cost.
Related Calculators
Methodology & Review
The increase is the change between the old and new price divided by the old price, multiplied by 100. It compares two prices for the same billing period and does not annualize automatically or account for changes in what the subscription includes.
Written by Ugo Candido · Last updated May 22, 2026.