AITA for telling my sister I’m not getting her the stuff she wants for Mother’s Day?

A 21-year-old woman flat-out told her 27-year-old sister she won’t be following her pricey wish list for Mother’s Day this year. She’s stretched thin after buying a new car and wants to treat their actual mom to something really special after a tough year. The sister got upset, insisting no gift cards, and pushed for her and their brother to split the cost of something high-end instead. The brother’s in the same boat financially.

The argument heated up when the younger sister repeated she’d still get her something small—but nothing extravagant, especially with three people (plus her brother’s birthday landing on the same day) to consider. When the sister kept rejecting simple options like flowers or a card, the younger one snapped: “You’re not even my mom. This day is about the woman who gave birth to me.” The sister went silent and has barely spoken since. It’s got people wondering—how far should family obligations stretch on holidays like this?

‘AITA for telling my sister I’m not getting her the stuff she wants for Mother’s Day?’

It started a couple weeks back when she laid it out clearly:

She brought it up again, same response:

Extra context on the sister:

The core issue is mismatched expectations: a 27-year-old single mom expects her younger siblings to buy her expensive Mother’s Day gifts, while the 21-year-old sister is pinching pennies after a big car purchase and wants to prioritize their actual mom.

The older sister might feel overlooked—no partner pitching in, a toddler too young to shop—so she turns to her siblings for that validation. Single moms often face extra emotional weight during holidays like this.

But Mother’s Day is traditionally about honoring the woman who raised you, not every mom in the family tree. Expecting siblings to go big financially year after year isn’t standard, and it breeds resentment fast. Family psychologist Dr. Susan Newman, author of “The Book of No,” explains that constantly giving in to unreasonable demands creates a cycle of entitlement—the giver burns out, the receiver demands more.

Practical advice: The younger sister has every right to set limits and focus her budget where it matters most—her mom. A heartfelt text, cheap flowers, or a simple card is plenty from a sibling. If the pressure keeps coming, a clear line like “I care about you, but my finances are tight and I’m prioritizing Mom this year” can help. Learning to say no protects your wallet and mental space. If the niece’s relationship takes a hit, that stems from the sister’s behavior, not hers. Firm boundaries over time lead to healthier dynamics than endless appeasement.

Here’s what people had to say to OP:

The online response was overwhelmingly in favor of the younger sister, with people calling out the older sister’s entitlement and expressing genuine confusion about why siblings are expected to buy big gifts for Mother’s Day at all.

Most people stressed that Mother’s Day is for your own mother—not for your sister—and that expecting expensive gifts from siblings is unusual and demanding:

Another big wave of comments focused on how strange and entitled the expectation is, saying even a simple text would be plenty from a sibling:

Finally, commenters urged her to stop giving in altogether and to set firm boundaries moving forward:

This story really comes down to balancing kindness toward family with protecting your own limits and wallet. The younger sister started out feeling guilty for saying no to her sister—a mom herself—but the huge wave of support helped her realize the entitlement at play and decide to stop the expensive gifts completely.

What do you think? Do siblings owe each other Mother’s Day presents, or is a quick “Happy Mother’s Day” enough? Have you ever dealt with over-the-top gift demands from family? Drop your thoughts below—this kind of everyday family tension always sparks a lot of discussion!