Many folks get confused when it comes to COGS and inventory. Even those of us experienced with this can get what I called "Febuzled" at times. So double-check yourself, and triple check if necessary. I have very little doubt it's a program issue, and at this time lean towards it being a data entry issue. It's most common when you have declared inventory removed for personal use.
BOY (Beginning of Year) Inventory Balance - What you paid for inventory in your physical possession on Jan 1st of the tax year. This must match the prior year's EOY inventory. No exceptions. Therefore the first year inventory balance must be zero regardless of when that inventory was purchased. That's the only possible way to match the prior year's EOY balance.
EOY (End of Year) Inventory Balance - What you paid for inventory in your physical possession on Dec 31 of the tax year.
