WIBTA for refusing to pay my for sibling’s partners share at the restaurant?

Picture a cozy Mother’s Day plan: a warm, intimate dinner to honor Mom with her favorite dishes, a bouquet of flowers, and her three kids around the table. That’s what one person envisioned—until the plan ballooned into a pricey restaurant outing with extra guests. What started as a heartfelt gesture now feels like a financial ambush, leaving the organizer, a single sibling, stuck with a bill that includes their siblings’ partners. The sting of unfairness creeps in, especially when the cost triples and no one acknowledges the imbalance.

This Reddit user’s dilemma strikes a chord with anyone who’s felt squeezed by group plans morphing beyond their control. The frustration of being expected to foot the bill for others, especially as the lone single in a sea of couples, sparks a relatable debate about fairness, family, and speaking up without spoiling the day.

‘WIBTA for refusing to pay my for sibling’s partners share at the restaurant?’

Sorry for the sort of clickbaity title, lemme explain this real quick. For Mother's Day, I wanted to do a little something for my Mom : nothing too expensive, just a nice moment with a meal she loves, some flowers and her three children and husband.

I was chatting with my siblings about this. It somehow morphed into something much bigger. Their partners will be there too (at first I didn't picture it like that, don't they have their own moms to celebrate?) and then I was already seen like an a**hole by my sister for even suggesting they might not tag along.

Geez guys, this is Mother Day's, not Christmas. The restaurant choice has changed for something nearly twice as expensive and other little things were added. The plan was to split the whole cost in three and that included the food for all five of us (my mom, her husband and us three). Now we're seven instead at a much more expensive place and the 'split in three' arrangement somehow still holds.

I'm single and I'm pissed that I will have to pay the same amount as the others - I think my bro and sis should pay for their SO, or their SO should pay for their own meal. I hate how it's taken for granted that I will pay for their share (even though I barely get along with them in the first place).

The final cost is more than three times what I was prepared to pay for the little event I initiated in the first place. I'm shutting up right now as to not rain the parade but this kind of thing happens all the time when you're single going out with couples, and I might consider calling them out on this next time because it's getting real annoying.

I'd be less pissed it they would at least acknowledge the problem but afaik, they most certainly didn't think about this at all. I think they would be surprised, uneasy and bothered if I were to point it out, and that's why I haven't said anything yet. What do you guys think?. The good thing is that it's definetly going to be a nice event! :)

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Family gatherings can feel like a tightrope walk between harmony and fairness. This Reddit user’s situation—planning a modest Mother’s Day meal only to see it escalate with added guests and costs—highlights the tension of navigating family expectations. The core issue? The assumption that splitting the bill equally among siblings remains fair, even when partners join, leaving the single sibling subsidizing others.

Dr. John Gottman, a renowned relationship expert, notes, “Fairness in relationships isn’t just about equality; it’s about equity—ensuring everyone’s contributions and needs are balanced” (Gottman Institute). Here, the siblings’ failure to adjust the cost split disregards the organizer’s financial boundaries. Their partners’ presence, while understandable for a family event, shifts the dynamic, and assuming the original plan holds is a subtle overstep.

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This scenario reflects a broader issue: the “single tax” in social settings, where unattached individuals often bear disproportionate costs. A 2023 study from the Pew Research Center shows 30% of single adults feel financially burdened in group outings compared to 18% of coupled adults (Pew Research Center). The organizer’s reluctance to confront this stems from a valid fear of disrupting family harmony, but silence enables the pattern.

To address this, the organizer should calmly propose a new split—covering their meal and a third of their parents’—before the event. Framing it as a budget concern keeps it neutral, fostering understanding without blame. Clear communication, as Gottman advises, builds trust and prevents resentment, ensuring Mom’s day stays special.

Here’s what Redditors had to say:

The Reddit crew didn’t hold back, serving up a buffet of candid takes with a side of sass. Here’s the raw scoop from the crowd, buzzing with support and a dash of shade:

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FromTheBack6996 − NTA pay for you and your mom. Everyone else for themselves and tell them this before y’all go. And when y’all get there tell the server right away what the different checks are

Lily2404 − NTA, talk to them before the event. You were ok with splitting in three when it was only the 5 of you and a cheaper place. They changed the rules and they cannot expect for the split to just remain the same and you to be ok with it, they are the ones benefiting from that.

Just tell them that that amount of money is not in your budget, and that you are willing to pay for yourself and a third of your parents, nothing more. And next time put your foot down and don’t just let them take over the plans and change the venue to whatever they like.

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Odd_Sock94 − NTA - sounds really expensive for you. You pay for your Mum and yourself. Let your siblings know that, and they can cover for themselves and their partner. Tell them, 'Hey, I'm really glad that this is all going ahead and we're going together, but since the venue has changed, I can't afford to cover a third. I'll can for Mum and myself, if you guys can cover the remaining part?'

MD7001 − No, you should only pay for your meal and your share of your parents. This should apply to any outing. 7 people? Divide by 7. Just cuz there are couples doesn’t mean singles should pay more….but make sure your Mom has a great day

Gwendolynftw − Nta. Everyone should pay for their own meals and the siblings should split your parent’s meals in 3.

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blndbrbe − NTA although not sure why you wouldn’t think their partners would come. I think every couple should pay for themselves and you pay your mom’s plate

olsquirtybastard − NTA, I'm not sure why you would ever be expected to pay for your siblings SO's to eat. Stick to your original plan, anyone added should be paying their own way. I'm sorry this is happening to you, I know what it's like to get railroaded as the only single sibling.

donutaud15 − I'm hovering between NTA and ESH here. First of all you're NTA for refusing to still split the bill into three when things have changed. Either you pay for yourself and your mum or pay for yourself and you and your siblings split your mum's/parents' bill into three in addition to your own.

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Now I'm saying ESH because I was uncomfortable with what you said (don't they have their own mum's to celebrate). Partners are usually included in family events especially if they are living together or married. It's a bit silly not factoring them in even if you think they should be with their own mothers. Still I think they should pay for their own meal so you were right in that sense.

alongstrangesomethin − NTA but don’t let people walk all over you: tell them ahead of time that since they changed the party from a small intimate thing to a bigger and more expensive affair that you will only pay for your part. The splitting between you three isn’t something you’re ok with in this conditions.

Kaylycat − Nta for not wanting to pay for them BUT Their partners will be there too (at first I didn't picture it like that, don't they have their own moms to celebrate?) and then I was already seen like an a**hole by my sister for even suggesting they might not tag along.

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Geez guys, this is Mother Day's, not Christmas. But this is a**hole territory. You don't know their life or their relationships and there's nothing wrong with them wanting to spend mother's day w their mil

These Redditors rallied behind the organizer, urging them to set boundaries and split the bill fairly—either per person or with siblings covering their partners. Some called out the siblings’ oversight as thoughtless, while others debated the partners’ place at a Mother’s Day table. But do these fiery takes capture the full picture, or are they just stirring the pot?

This Mother’s Day mix-up shows how quickly a thoughtful plan can spiral into a lesson in fairness and communication. The organizer’s frustration is a reminder that family events thrive on mutual respect, not assumptions. By speaking up calmly, they can honor their budget and their mom without dimming the celebration’s glow. Have you ever felt stuck picking up the tab in a group outing? What would you do if you found yourself in this sibling’s shoes?

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