Can it be that a FV formula works fine in one row and the exact same formula gives me a wrong result in the next row?

Has anyone ever encountered this strange phenomenon, and if so, how did you fix it? Please help, I think I'm going crazy

Perhaps post a small sheet showing the problem , ( no pics please) ?

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Notice how the balance in B9 went down (as it should after 2 months of payment), but in the following rows it goes up?

Attached Files

FV Trouble.xlsx (12.1 KB, 12 views)

Can this be of any help?

Attached Files

FV Trouble_2.xlsx (12.7 KB, 10 views)

Thank you. It helped me figure out what I did wrong. I forgot to divide the interest rate by 12, since payments are monthly but the interest rate is annual. Now all is working as it should. I should've known it was an operator error. Thank you for your help.