Tax credit and pension contributions

peppapig14

I currently only claim tax credits, I pay £23 per month for my company pension. I now have the option of paying an additional £38 per month and my company will make matched contributions.
I have entered the revised amount of pension contributions ( 61 instead of 23 ) onto the tax credit calculater expecting my estimated tax credit amount to decrease, however it increases- is this correct?

sheramber

If you pay £38 more pension payments then your net income is ls £38 less, so your tax credit increases