Software Spend Forecasting: Inflation, Uplifts and Headcount Drivers
A driver-based approach to forecasting software spend: general inflation, vendor price uplifts, headcount growth, efficiency savings and contingency, with an example.
By the MI Solutions SAM team10 min read2 exhibits
A forecast built on a single growth percentage hides what is really happening. Some contracts will rise with vendor price increases; others scale with headcount; some will shrink because you plan to reclaim or retire. Driver-based forecasting makes each of those forces explicit, so the forecast can be explained, challenged and adjusted.
Five drivers
Driver
Applies to
Example assumption
General inflation
Contracts with CPI-linked increases
3%
SaaS price uplift
Tagged contracts with expected vendor increases
7%
Headcount growth
Per-user products tied to hiring
4%
Efficiency savings
Contracts with planned reclaim or consolidation
−6%
Contingency
Unplanned needs
2%
The forecast as a bridge
Exhibit 1
Top-down vs driver-based
Exhibit 2
The actuals line stops in September, the latest closed month, which is why it is shorter.
How to build it
Start from the contract baseline
Next year's value of every agreement at current terms.
Tag contracts
With the drivers that apply to each.
Apply each driver
Only to its tagged contracts.
Add contingency
As a separate line, not hidden in other drivers.
Show the bridge
And the assumptions, to finance.
Update
As negotiations conclude and hiring plans change.
Forecast review each month
How MI One helps
Frequently asked questions
How accurate can a software forecast be?
With contract-based baselines and explicit drivers, most organizations stay within a few percent, with variances explained by timing and consumption.
Should savings be in the forecast?
Yes, as their own driver, so finance can see the assumption and track delivery.
How far ahead should we forecast?
Twelve months in detail, and three years at the driver level for planning multi-year agreements.
See where your software budget goes
Bring your five largest vendors to a 30-minute call. Our SAM experts will show you where the savings usually hide, and how fast MI One can surface them.
