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CroVello
Free Tool

Wet Stock Variance Calculator

Find out if fuel is disappearing from your tanks - and what it is costing you every month. Enter your tank readings, deliveries, and meter sales. The math will tell you the rest.

How It Works

Enter Tank Data

Enter your opening and closing tank readings, deliveries, and POS sales for each fuel grade you sell.

See Your Variance

Find out exactly how many gallons are unaccounted for - per grade and in total across your station.

Know the Cost

See the dollar impact of your variance and whether it needs immediate investigation or routine monitoring.

Ready to Fix What's Broken?

Your complete gas station accounting team. Bookkeeping, fuel reconciliation, tax filing, and financial clarity - all for one flat monthly fee.