Add a renewal uplift, an exchange-rate buffer for USD-priced services and known extras to this year's cost to get a budgeted renewal price.
Use this calculator at budget time or 90 to 120 days before a managed security contract renews. It answers one question: current cost + uplift and FX buffer + known extras = what should I budget for next year?
How to fill it in. Enter this year's total cost in Canadian dollars, before sales tax. In the percentage field, add the renewal increase you expect (or the cap written in your contract) to a buffer for exchange-rate moves if any part of the service is billed in US dollars. Under fixed extras, enter growth you already know about: new endpoints, a second office, a log-volume tier you will cross, or an added service such as a vCISO day each quarter.
Formula. Extra = current cost × percentage + fixed extras. Budgeted renewal cost = current cost + extra.
Worked example (illustrative). $36,000 a year, 7% expected uplift plus a 5% FX buffer (12%), plus 20 new endpoints at an illustrative $10 a month (20 × $10 × 12 = $2,400). Extra = $36,000 × 12% + $2,400 = $4,320 + $2,400 = $6,720. Budgeted renewal cost = $42,720.
Limits. A buffer is a planning allowance, not a forecast: the Canadian dollar can also strengthen. The calculator does not compound over several years and does not add GST/HST or QST. See renewal uplifts and USD pricing for security services.
Cost Estimates, Worked Examples and Best-Fit Checklists
Why managed security bills rise at renewal, how endpoint, log and USD effects add up, and how to budget an uplift and FX buffer.
