# 8.10. Differential fee and result of the declaration

The program will calculate the differential fee and the result of the declaration.

The differential fee will be the difference between the amount entered in boxes 0595 and 0609. If a negative amount is obtained, the amount in box 0610 will appear preceded by the minus sign (-).

The result of the declaration will be the product of the following operation: boxes (0610-0611+0612-0613-0623+0624-0636+0637-0645+0646-0660+0661-0662+0663+0664+0661) If a negative amount is obtained, the amount in box 0670 will appear preceded by the sign less (-). If the result of the tax return is a positive amount, the amount must be paid.

If the result of the declaration is a negative amount, the taxpayer has the right to a refund of the amount that results in their favor.