Monthly vs Annual Subscription Calculator

How to use this calculator

1. Enter the monthly price, what you'd pay per month on the monthly plan.
2. Enter the annual price, the total cost for the full year (not the per-month figure).
3. Optionally add a promo discount % if you have a coupon code or Black Friday deal.
4. The calculator instantly shows your yearly cost for each option and how much you save.

Annual vs monthly subscription: the cost difference

Most services price the annual plan at a discount to twelve monthly payments. Published pricing surveys put the typical gap at 15% to 20%, and a 2025 review of software pricing found a median yearly-to-monthly ratio of 125%, which is a 20% discount. Some services go further during sale periods. On a £12 a month service, a 20% annual discount means £115.20 for the year instead of £144, so you keep £28.80. The calculator does this in whichever currency you use, because it works on the two numbers you type in rather than a fixed rate.

Your break-even month

The useful question is not how much you save, it is how long you have to stay to save anything. Divide the annual price by the monthly price and you get the number of months the annual plan costs you. At £115.20 a year against £12 a month, that is 9.6 months. Cancel before month ten and monthly would have been cheaper. That break-even number is the honest test of whether an annual plan suits you, and it is why a 50% off deal on something you abandon in March still loses you money.

Pros and cons of each billing cycle

Annual pros: lower total cost, one payment to track rather than twelve, price locked against mid-year rises, and no monthly card declines. Annual cons: a large upfront hit, money tied up for a year, refunds often partial or refused, and forgotten renewals cost a full year rather than a month.

Monthly pros: cancel any time, low upfront cost, easy to trial a service, and simple to cut when budgets tighten. Monthly cons: more expensive over a year, twelve chances to forget you are paying, and small amounts that are easy to overlook on a statement.

When monthly is the better call

Pay monthly when you are trialling a tool, when the service is seasonal such as a gym membership you use in winter, when a competitor might make the service redundant within the year, or when the upfront amount would strain your account. Flexibility has a price, and the calculator shows you exactly what that price is so it is a decision rather than a default.

Frequently asked questions