You can benefit from Marriage Allowance if all the following apply:
•you’re married or in a civil partnership
•you do not pay income tax or your income is below your Personal Allowance (usually £12,500)
•your partner pays income tax at the basic rate, which usually means their income is between £12,501 and £50,000
Regarding the £50k - is this gross pay or is this taxable income after allowances?
T7