what % of your income ACTUALLY goes to rent?

So many variables. My income vs 50% of mortgage? (Though our income are 50/50) Household income vs 100% of mortgage? Gross income or net tax? What about gross or net pension contributions that come directly off my payslip each month? Do you just want mortgage/rent alone? Does the 30% rule of thumb include all household costs? What about council tax, property and contents insurance, G&E, water and internet etc? If you take the gross gross figure pre tax and pre everything (household income not just 1 person) and only include the mortgage it's like 10%. If you take net of everything post tax, pensions, council tax household bills etc its probably 25-30% depending on what you count as household bills.