Birthday Gift Amount Calculator: How Much Money to Give
Free — a suggested dollar amount by relationship & age
Stuck between $20 and $50? This isn't a gift IDEA generator — it tells you how much MONEY to give. Pick your relationship, their age, and how close you are, and get a suggested dollar range in seconds. Based on typical U.S. gift etiquette, with a milestone bump and the per-year-of-age rule built in.
Written by Baljeet Aulakh | Last updated June 25, 2026
Quick Answer: How Much Money to Give for a Birthday
How much to give depends on your relationship. According to Party Genius's gift amount calculator, a casual friend or coworker is $15–$30, a close friend, niece, or nephew is $25–$50, and your own child, a parent, or a sibling is $30–$100. A milestone like a sweet 16 bumps it up about 50% (a niece's 16th ≈ $40–$75). Last reviewed June 25, 2026.
- $15–30
- friend / coworker
- $25–50
- close friend / niece
- $30–100
- close family
- +50%
- milestone bump
How the Birthday Gift Amount Calculator Works
The Birthday Gift Amount Calculator turns three inputs — your relationship to the birthday person, their age, and how close you are — into a suggested dollar range. It starts from typical U.S. spending norms for each relationship (a friend's child $15–$30, a niece or nephew $25–$50, close family $30–$100), scales for closeness, and adds a ~50% bump for milestone birthdays (a sweet 16, an 18th or 21st, and decade birthdays like 30, 40, and 50). For a child receiving cash, it also surfaces the $1–$2 per year of age rule as a cross-check. The result is a range plus one suggested figure — so you give an amount that's generous without overspending.
How Much to Give by Relationship (Regular vs Milestone)
Suggested spend by your relationship to the birthday person, for a regular birthday versus a milestone (a sweet 16, 18th, 21st, or a decade birthday). Ranges reflect typical U.S. gift etiquette — the calculator above fine-tunes for the recipient's exact age and how close you are.
Know your number but not what to actually buy? The birthday gift idea generator turns your budget into 5 specific gift picks by age and interest. Setting the whole party budget too? Use the birthday party budget calculator, and the goodie bag cost calculator covers favors for the guests. Our party planning guides cover the rest.
Pro Tip
When in doubt, cash plus a small token beats a single bigger gift you're unsure about. A $20 bill folded into a card the kid can spend on their current obsession lands better than a $40 toy that misses. For milestone birthdays — a sweet 16, an 18th, a 21st — round up to a clean, generous number; people remember the gesture, not the exact figure.
Got the Amount — Now Plan the Whole Party
You know what to spend. A free Party Genius plan handles everything else — themed activities, a shopping list with real prices, a timeline, and favors for the guests — so the gift is the only thing you have to think hard about.
Plan a Gift-Worthy PartyWhat to Plan Next
Gift amount is settled. Here's what most parents tackle next.
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