help me calculate this.

[Panda368]

So our mortgage will be £870 per month.

As partner has had a payrise we are now going to split the payments proportionately to what we earn to make it more fair.

Him - 41,500
Me - 30,500

so I earn roughly 70% of what he does -

What will each of our payments be if we split them in proportion to our earnings? it's giving me a headache.

Are your figures pre- or post- tax and NI? I'd work on your take home pay rather than gross salaries.

If you want to work it out that way, add the two together then take yours as a percentage of the total then apply that percentage to the mortgage payment to come to your "share"

You should do it on take home pay as HopeHappy says.

If those figures are take home pay, it should be:

Him: £501.46
You: £368.54

The way to do it is:

1. Add your salaries together.
2. Divide the mortgage payment by your total salaries.
3. Multiply the answer by his salary to get his payment.
4. Repeat for your payment (or subtract his payment from the total mortgage payment.

I'm assuming you quoted after-tax figures?

He makes 57.64% of the family's total income ( = 41,500 / (41,500+30,500)) so, if you want to contribute proportionally to that, he should contribute 57.64% of the mortgage instalment

How do you allocate the other household expenses? Don't you have a joint account you both contribute to?

Are you both maximising pension contributions and any other salary deductions??

so those figures were gross pay before tax.

We don't have a joint account and currently all other house expenses are 50/50 - we transfer money between each of our personal accounts, the system works well currently.

I think we will be getting a joint account with the new house and dumping about 20k of equity from our house sale into it so we aren't asking each other constantly to go halves on everything related to the renovation.

Thanks for the figuring out for me and also for showing the working out. Percentages and proportions hurt my head and I didn't know where to start with getting a rough idea.

Total combined income = £72,000
DH's percentage of that = 41500/72000 = 0.5764 (57.64%)
So he pays 0.5764 x 870 = £501.46 and you pay the rest

Using net wages (these figures do not include any pensions you may have deducted from your salaries, which I think is fair):

Him - monthly net pay = £2,657
You - monthly net pay = £2,034

Total net pay = £4,691.

His share = £2,657/£4,691 x £870 = £493
Your share = £2,034/£4,691 x £870 = £377

Don’t forget that if there are student loans these will impact upon the net pay too. Any employee benefits etc?