Can anybody help with my tax return please?

[ClarkGriswold]

We've accidentally been claiming child benefit since my husband's salary has gone over the threshold so suspect we owe some money back. Trying to do a self assessment tax return and I'm completely bamboozled by the pension section when trying to work out adjusted net income.
My husband pays into workplace scheme via salary sacrifice which comes off his gross pay and so I think means already gets the tax relief on this. We then pay an additional sum into a private pension which is a direct debit from current account and I think is topped up by government, but we can claim additional tax relief on this as a higher rate tax payer via the self assessment form.
I just can't work out if we include the workplace pension contributions in the bit where it says to add up your taxable income "then take off any tax reliefs that apply, such as payments made gross to pension schemes, those have been made without tax relief".... or is this where we deduct the private pension contributions?
Can anyone shed any light? My brain is fried and I've read endless guides online and am none the wiser. To think I wanted to be an accountant

We just did ours, I'm pretty sure the workplace one was already counted as it just reduces your taxable income.

I'm pretty financially literate too and the whole thing is so confusing

@QuiltedHippo thank you- it's hurting my head, I've read so much online and some of it's conflicting advice. Contemplating asking an accountant to do it but trying to find one to do a last minute tax return at this time of year might be tricky!

Does your husband earn over £200,000? Otherwise that part isn’t relevant.

The section that asked for pension contributions from net pay you put in the amount you’ve been paying into the private pension.

@ChilliBandit no he earns around £70k. His salary sacrifice pension payment is topped up by employer and is listed under "gross payments" on his payslip. Then the private pension payment is paid separately out of his salary that's already been taxed (but I think we can claim small amount additional tax relief on that). It's just the wording of this bit in the photo of the guidance notes that is confusing me - so his adjusted net income is just his total taxable salary (ignoring the workplace pension payment) minus the "grossed up" private pension payment? Thank you for help :)

If you're in the UK, contact Tax Scouts. Online service. Very cost effective and worth it. You don't want to get this wrong for the sake of £150.

Sorry I’m not that familiar with HMRCs system because I don’t use it but you shouldn’t need to be doing any calculations yourself. There should just be a box to put in his salary, a box to put in the contributions to his private pension and a box to put the amount of child benefit you claimed in.

I am not sure where the screen shot has come from but you don’t need to work out net income like that for a tax return for an employee. It’s much simpler.

Sorry should have said, put in the figures from his P60 for his employment income. No need to adjust them for anything. In a separate bit there is the box for private pension contributions, HMRCs calculator will work out how to do the tax relief.

The workplace pension is included in his employment income because they're deducted before tax. Here's a quote from a HMRC forum:

With our Child Benefit tax calculator, we are looking for your salary before tax(with pension contributions under net pay arrangement deducted) to determine if you need to pay the charge.