Turn a percentage renewal uplift and any new fixed charges into dollars, and see what a flat budget would still buy.
Enter what you pay a year now for subscriptions and support, the uplift percentage in the renewal notice or contract, and any new fixed charges introduced at renewal, such as a platform fee or a module that used to be included. The tool calculates extra cost per year = current annual amount × uplift % + new fixed charges.
The second result is a rough guide for a business that must keep ERP spend flat: current amount − extra cost. It approximates how much of today's scope, valued at today's prices, the same budget would cover after renewal. It is a first-order approximation; the exact figure is (current amount − new fixed charges) ÷ (1 + uplift).
Worked example (illustrative): $48,000 a year with a 7% uplift is $3,360 more, plus a new $2,400 fixed charge, so $5,760 extra a year, a 12% increase. On a flat budget you could fund roughly $42,240 of today's scope (exactly ($48,000 − $2,400) ÷ 1.07 ≈ $42,620), so you would need to cut seats or modules or negotiate.
Limits: it shows one renewal only. Uplifts compound: 7% a year for three renewals is about 22.5%, not 21%. Read the renewal uplift worked example and check the price-change clause in your contract, as described in the contract traps guide.
Worked Costings and Selection Checklists
How SaaS and ERP renewal uplifts work, the clauses that set them, how they compound over five years, and how to negotiate a cap before you sign. Illustrative maths.
ERP Pricing, Comparisons and 2026 Rules
How USD billing changes your ERP budget, how GST applies to imported digital services for GST-registered businesses, and how to quote your ABN correctly.
