Allocate a partial-year window from one fixed origin
Your goal: Reconcile fractional-year VDB allocations and closing values with and without straight-line switching.
Full task requirements
Enter separate formulas in E2:E5. B2:B4 are cost, salvage and whole useful years; B6 is the declining factor. B8 and B9 are elapsed-year window endpoints with 0 <= start <= end <= life. E2 is the difference between automatic-switch cumulative VDB charges from time zero through end and from time zero through start. E3 is the direct VDB charge over the window with no_switch TRUE. E4 and E5 are initial cost less cumulative charges from zero through end with switching allowed and with no switching. Keep fractional years and unrounded amounts.
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Identify the depreciable base
Rules for this step
Select initial cost and salvage. The depreciable base retains currency precision; equal values produce numeric zero.