You can create a calculated field:
[Field 1] > 0 and [Field 2] >0 and [Field 3] >0
and set it to true in the filter.
Alternatively, you can pivot/transpose your data so that you have a column of just the metrics.
From your description, I assume that you have each month debt as a separate measure. If that is the case, i would advice you to pivot the table to bring all the months as a dimension and the debt amount as a value. If your data source is excel, you can do this within tableau.
Please follow this post on pivoting data in tableau - Pivot Data from Columns to Rows - Tableau