Excel
Is it actually cheaper to build a DMS in-house? Run the 3-year numbers.
A free Excel cost model for CIOs, founders, and CFOs: enter your in-house team size, salaries, build timeline, and opportunity cost — and see the fully-loaded 3-year build cost set against SalesPort's flat AMC.
For:CIOs, IT heads, founders, and CFOs weighing an in-house build against buying.
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Why this template helps
'We'll just build it ourselves' almost always under-counts the real cost: salaries over a multi-year timeline, maintenance, the features you discover late, and the opportunity cost of your best engineers not building your actual product. This model surfaces the full number so the decision is made on maths, not optimism.
What's in the model
- 1Input cells for in-house team size and loaded salaries
- 2Build timeline and ongoing maintenance assumptions
- 3Opportunity-cost input for engineers diverted from core product
- 4Output: fully-loaded 3-year build cost
- 5Side-by-side: build cost vs SalesPort flat AMC over 3 years
- 6Editable assumptions so the numbers are defensible in a board review