Hi - I've been using this spreadsheet since Oct '17 to manage a chequing account. Very simple adding of entries week by week and the final row will tally the week's finances and equal the amount in the account.

Suddenly the SUM cell is doubling the amounts I am entering in the individual items.

In this image, you see a weekly total at the bottom. That number is copied to the top of the next column and the SUM function includes that number plus all new entries for the week.

But you see the total has doubled the entry amount - The $5.00 is calculated as $10.00.

=SUM(CJ3:CJ51) - So CJ3 is the beginning balance. Cell CJ52 has the SUM calculation. Doesn't get any simpler than this.

Is there a simple setting that's been messed up? Is my file corrupt? I just can't figure this one out.

Thanks for any input.