The concept of fiscal partnership is very important when calculating taxes, subsidies and other financial issues (where your fiscal revenues matter). In fact, a fiscal partner is someone with whom you share income and expenses from a tax point of view.
First of all, this applies to people who are married (official or civil), but it may also happen that the fiscal partners according to the tax rules will be any two people registered at the same address, if, in addition, at least one more condition coincides, which by existing regulations will make them tax partners. It is important to remember this in order not to find yourself in an unpleasant situation.
