How much money do you give for a Bar Mitzvah?
Cash, check and 529 contributions for a Bar or Bat Mitzvah are traditionally given in multiples of 18. The number isn't arbitrary - it comes from gematria, the Hebrew numerical alphabet, where the word chai (חי, meaning life) has a value of 18. Giving in multiples of 18 is a wish for long life.
Most non-Jewish guests aren't expected to know this, but if you do follow the custom it's a thoughtful detail the family will notice.
Typical amounts by relationship
These are 2025-26 medians, not rules. A heartfelt $36 from a kid's classmate is just as welcome as $360 from a great-aunt.
- $36 (chai × 2)Casual acquaintance, coworker of the parent, kid's classmate.
- $54-$108 (chai × 3-6)Close family friends, close friends of the parents.
- $180 (chai × 10)Aunts, uncles, cousins. The single most common amount.
- $360+ (chai × 20+)Grandparents. Often paired with a savings bond or 529 contribution.
- $144 average via 529On Onetov, the average 529-plan contribution is $144 (chai × 8).
Cash, check, Venmo or 529?
Check made out to the kid is traditional and still works. Cash in a card is fine. Venmo and Zelle are now standard among guests under 50 and the family will rarely mind. A 529 contribution via Onetov is the only option where the gift goes straight to college and the kid sees a thank-you note already drafted.
Physical gifts (Judaica, jewelry, books) are appropriate from family but unusual from friends. When in doubt, give cash or a 529 contribution.
What if you can't attend?
If you decline the invitation but are close to the family, a gift is still customary. Send it within two weeks of the date. If you're a distant acquaintance who couldn't make it, a card alone is fine.
Group gifts and 529 contributions
Group gifts are increasingly common among the kid's friend circle and among parent friend-groups who want to give something meaningful without each writing a $500 check. On Onetov, any item or 529 goal can be split across multiple givers - everyone gets credited individually on the thank-you note.
A 529 contribution goes into a parent-owned 529 college savings plan in the child's name. The family handles the IRS paperwork; the giver just sees a receipt. There's no tax deduction for the giver federally, but a handful of states (NY, IL, IN, OH and others) offer a state income-tax deduction for 529 contributions even when you're not the account owner. Check your state.
Card etiquette and the thank-you note
Hand the card to the parent at the start of the event, not the kid. Cards left on a gift table get misplaced; pocketed checks get cashed. Address the envelope to the child, write the inside note to the child, sign it from your whole family.
Thank-you notes from the kid are expected within 6-8 weeks. If you haven't received one after 3 months, it's fine to gently confirm the gift arrived - checks do occasionally get lost.
Frequently asked
Why is 18 significant in Jewish gifting?+
The Hebrew word chai (life) has a gematria value of 18. Giving in multiples of 18 is a traditional wish for long life and has been the standard for life-cycle gifts (Bar/Bat Mitzvahs, weddings, baby namings) for centuries.
Is it OK to give less than $36?+
Absolutely. A handwritten card from a classmate means more than any check. Multiples of 18 start at $18.
Do grandparents typically give more?+
Yes, often significantly more. Grandparent gifts of $500-$5,000, frequently as a 529 contribution or savings bond, are standard.