Marriage Tax Allowance 23 May 2018 at 3:07PM in Reclaiming mortgage fees, council tax, etc

Finchy779

Hi,


My wife was a non taxpayer for a year in 2017 after mat leave ended, she has now returned to work and is a taxpayer again, are we entitled to claim the allowance for the previous tax year? or is it just backdated to the start of the current tax year in which case we are too late for a claim.


Thanks in advance