Please take note: There are significant changes coming in for mixed age couples where one is over state pension age and the other is under.
At present the couple qualifies for the more generous rate of pension credits at the point where the older partner reaches state pension age.
From 15 May 2019 this will change so that the couple only qualify for the more generous rate of credits when the younger partner reaches state pension age. The potential benefit loss could be up to £7,000 per annum, it is therefore essential that people are encouraged to claim as soon as possible.
Please check on the links below this may help you.
This link is to the benefits calculator free usage https://www.entitledto.co.uk/benefits-calculator/
This link gives you additional information https://www.entitledto.co.uk/mixed-age-couples