Been with partner 10 years. No kids, not married, no plans to be. But we are long-term partners and are both planning that this is hopefully the partner for life.
I am higher earner and self employed. Used to be on significantly more, now on a pretty average salary due to industry changes.
He has always been on a lower amount. He was pursuing art things (and doing quite well) and freelancing in odd jobs. For various reasons, he is not suited to an office career job (he tried).
I got on the property ladder (all my own hard work, no help from parents). I recently sold, and made a reasonable amount of money. He paid me a token amount while we lived there. (Lower than market rent). Me and my partner have now bought a house together.
Now we are both on the deeds. He is working a minimum wage job again. (He works bloody hard. He is a grafter.) He does have plans to improve his income (but it doesn't always work out).
How much should we each pay? We agreed 50/50 towards all house bills and house improvements. (Because otherwise, I would feel resentful given I have reduced my own investment to help him get on the property ladder and I want to protect myself in case we break up one day).
But, I feel guilty every time I bring up money stuff, and conscious that he's on less as I can see the stress in his face about paying. And I read a lot about how it's normal for higher earners to pay more... But I've paid more for 10 years.
YABU - you should pay more, he earns less
YANBU - your setup is fair and 50/50 is reasonable