A blog post about family budget management from another specialist.
Comment: Tell me, please, if the husband spends money on the mistress - what expenses can this be attributed to, mandatory or optional? What if the husband refuses to enter these expenses in the Excel table, and provide checks?
If sex with a mistress is more varied than with a wife - this is a mandatory expense. If the same is not mandatory.
If the husband refuses to record expenses and provide checks - you have to beat him with a wrap wrapped in a thick Moher towel, so as not to leave traces. The same method applies in the case of other refusals of the husband.