Attribution window in this calculator is 30-day revenue minus 7-day and capital cost. With 12000 spend USD, 18000 7-day USD, 26000 30-day USD, 10 capital %, 8 fees % the result is $6,940.00 | $8,000.00.
lift = long − short. cost = spend × (capital/12 + fees). net = lift − cost. The formula uses 7-day and 30-day.
$6,940.00 | $8,000.00 is not a Google Ads model. Another set of numbers gives $3,600.00 | $4,000.00, and a further set gives $11,800.00 | $14,000.00. Empty scenario fields do not change the result.
Signal loss answers a different question. ROAS does too. Here 12000 spend USD, 18000 7-day USD, 26000 30-day USD, 10 capital %, 8 fees % leave $6,940.00 | $8,000.00.
Type 12000 spend USD, 18000 7-day USD, 26000 30-day USD, 10 capital %, 8 fees % and click Calculate. Two more ready sets sit under the form: $3,600.00 | $4,000.00 and $11,800.00 | $14,000.00.
Other numbers on the same labels move the result. The first example gives $6,940.00 | $8,000.00.