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Calcimator

Post-Award Budget Modification Calculator

Determine whether a proposed budget reallocation requires funder approval based on cumulative changes and approval thresholds.

Inputs

%

Results

Requires Prior Approval (0/1)

1

Cumulative Change (%)

20%

Modified Category Budget$60,000.00
Net Change (This Modification)$8,000.00
Cumulative Change ($)$10,000.00
Approval Threshold ($)$5,000.00
Remaining Before Approval$0.00
Category % of Total Award24%
Projected Remaining Spend$20,000.00
Expected Spend Rate33,333.33%
How to Use This Calculator
  1. Enter the original budget line item amounts and any proposed modifications.
  2. Enter the funder's rebudgeting threshold percentage to determine if prior approval is required.
  3. Review line-by-line variances and the total budget modification amount.
  4. Check whether the modification crosses the prior approval threshold for the funder.
  5. Prepare a justification memo for each line modified and submit to the grants officer per program requirements.

What each input means

Original Category Budget ($)
Original approved budget for the category being modified.
Total Award Amount ($)
Total grant award amount across all categories.
Proposed Increase ($)
Amount you want to add to this category.
Proposed Decrease ($)
Amount you want to reduce from this category.
Prior Cumulative Modifications ($)
Net amount already modified in this category (positive = increases, negative = decreases).
Approval Threshold (%)
Cumulative change % that triggers prior approval requirement (typically 10-25%).
Remaining Grant Months
Months remaining in the grant period.
Total Grant Months
Total grant period in months.

What each result means

Requires Prior Approval (0/1)
1 = yes, cumulative changes exceed threshold; 0 = no, within allowable range.
Cumulative Change (%)
Cumulative modification as a percentage of original category budget.
Modified Category Budget
New budget after all modifications are applied.
Net Change (This Modification)
Net dollar change from this proposed modification.
Cumulative Change ($)
Total net change including prior modifications.
Approval Threshold ($)
Dollar amount at which prior approval is required.
Remaining Before Approval
How much more you can modify before needing approval.
Category % of Total Award
Modified category as percentage of total grant award.
Projected Remaining Spend
Estimated spending in remaining months at proportional rate.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Original Category Budget ($) = 50000, Total Award Amount ($) = 250000, Proposed Increase ($) = 8000, Proposed Decrease ($) = 0 = 8 input(s) provided
  2. Calculate Requires Prior Approval
    1 = 1
  3. Calculate Cumulative Change
    Cumulative Change = originalCategoryBudget > 0
    20 = 20%
  4. Calculate Modified Category Budget
    Modified Category Budget = originalCategoryBudget + cumulativeChange
    60000 = $60,000
  5. Calculate Net Change
    Net Change = proposedIncrease - proposedDecrease
    8000 = $8,000

Engine last updated .

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