Ad Spend Planning

Determine how to set your daily spending limits based on your total campaign spend, campaign duration, and a fixed spending growth rate.

Total Spend Weekly Increase Campaign Duration

Your Spending Plan

Week # Spend Per Day

How it Works

The spending plan is an example of a geometric series. The sum of the series is your total spend and has the form

S=∑i=0kSi=S0(1+r)k−1rS = \sum_{i=0}^{k}S_i = S_0 \frac{(1+r)^k - 1}{r}\\

where

S=Total spend across all weeksS0=Spend on the first weekk=Number of weeksr=Spending increase per weekS = \text{Total spend across all weeks}\\ S_0 = \text{Spend on the first week}\\ k = \text{Number of weeks}\\ r = \text{Spending increase per week}

This means that we can find our first week of spending based on the other variables:

S0=Sr(1+r)k−1S_0 = \frac{S r}{(1+r)^k - 1}

After we have the initial spend, we can calculate how much to spend each week:

Si=Sn(1+r)ifor i∈[0,k]S_i = S_n (1+r)^i \text{\quad for \quad} i \in [0, k]