This model computes only from your inputs. The two assumptions are the sliders above, both shown on every export. If you disagree with one, move it: the model is the argument, not the conclusion.
1. Cost of a pursuit
Loaded hourly rate is the senior day rate over an 8 hour day. A pursuit costs its hours at that rate. This treats all response hours at the senior rate; if juniors carry real share, lower the day rate to your blended rate.
hourly_rate = day_rate / 8
cost_per_pursuit = hours_per_response x hourly_rate
annual_pursuits = rfps_per_quarter x 4
annual_spend = annual_pursuits x cost_per_pursuit
cost_per_win = annual_spend / (annual_pursuits x win_rate)
2. Billable-hour leakage
Some share of response hours is not strategy or writing. It is senior people hunting for the case study, the metric, and the deck from three years ago, then rebuilding it. That share is assumption one (default 35%). Those hours were billable.
leaked_hours = annual_pursuits x hours_per_response x reconstruction_share
leaked_dollars = leaked_hours x hourly_rate
3. The flat-seat delta
Assumption two (default 20%, deliberately conservative) is the share of response hours an encoded, retrieval-ready knowledge base gives back: proof that is found instead of rebuilt. The reclaimed hours are valued at the same rate and set against the published Pitch Box price for your volume. Tier selection is mechanical: up to 3 compiled RFPs a month is Launch ($3,588/yr), up to 15 is Studio ($8,388/yr), beyond that Agency OS ($17,988/yr). All tiers are flat: unlimited seats.
reclaimed_hours = annual_pursuits x hours_per_response x reclaim_share
reclaimed_dollars = reclaimed_hours x hourly_rate
net_reclaimed = reclaimed_dollars - pitch_box_annual_price
payback_months = pitch_box_annual_price / (reclaimed_dollars / 12)
What this model does not do
It does not claim a win-rate lift, does not price the pitches you decline for lack of capacity, and does not count the cost of a senior departure taking the pitch brain with it. All three are real; all three would make the number bigger. We left them out so every figure on this page survives a CFO's red pen.