Subscription-total worksheet and calculator

Work out a subscription’s cost over a number of whole months you choose. Enter the introductory and renewal monthly rates separately, together with the number of months at the introductory rate. This keeps the opening price from being applied to months that would be charged differently.

The result uses the two-rate monthly schedule you enter, plus setup and assumed exit charges. It does not predict future price rises or cancellation conditions. Copy the current provider wording into the notes, and treat any annual billing, part-month charging or additional price stage as a limitation of this calculation.

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This tool does not save your entries automatically. Download a copy to keep your work, and clear the worksheet on a shared device before leaving. Do not enter passwords, account numbers or other sensitive personal information.

Choose the monthly horizon

This calculator uses whole months and monthly rates only.

Subscription name and plan

Number of months to compare

Number of introductory months

Enter 0 when there is no introductory period.

Enter the monthly charging schedule

Enter explicit zero when no charge applies. Leave an unknown amount blank.

Charge per introductory month, GBP

Charge per renewal month, GBP

One-off setup charge, GBP

Assumed exit charge at the end of this horizon, GBP

Enter 0 only if no exit charge applies to the scenario you are comparing.

Official source URL

Paste the exact page you checked; the worksheet does not check it for you.

Date checked

Relevant wording or uncertainty

Record enough context to understand the observation later; leave personal details out.

Record the assumptions

Check current provider wording before treating the scenario as complete.

Minimum commitment and billing wording

Cancellation process, deadline and official source

Known price changes or fees the two-rate calculation does not represent

Price basis

Using your worksheet

Use monthly billed plans and a whole-month horizon only.
Record the introductory period even if it extends beyond the chosen horizon; only months inside the horizon are counted.
Check minimum term, renewal rates and any exit charge against the provider’s current terms.
If a further price change or another fee is not represented, label the result as a partial estimate.

Assumptions and limits

Monthly billing, two unchanged rates and no proration are assumed.

No automatic cancellation, sign-up or reminder is created.

Setup and exit charges are user-entered scenario amounts, not asserted provider fees.