Hello, I want to close the book, clossing date: December 31, 2025. But the system not allow me to closed it, it said my inventory is less than zero but ac it's over.

Hello, chheng. This typically happens due to a gap in your records. QuickBooks tracks your inventory daily, so the timing of your entries is just as important as the final total. If your stock dropped below zero for even one day in 2025, the system flags it as an error. 

Now, if you had a negative quantity during that year, you have to fix it using a date within the same year. You can't use a 2026 date to fix a 2025 problem. The system will still detect the discrepancy in your past records and prevent you from closing, as the dates do not align. You can fix this by finding the transactions used to add your inventory and updating the dates to match the period you went negative. You can pull up your Stock/Inventory Valuation Detail report and filter the dates to see exactly when the balance dropped. Once your dates are aligned and your stock levels stay at zero or above, you should be able to close your books successfully.

Beyond that, if you have double-checked everything and the issue persists, you can contact our live support team. They can initiate a screen-sharing session to see exactly what is going on.

Feel free to comment below if you have any questions about this.