October 1, 2026
How far ahead to send party invitations, by occasion
Lead times for dinners, birthdays, milestones, showers and holiday parties, plus when to send a save-the-date and how to pick an RSVP-by date.
The short answer: the bigger the party and the farther your guests have to travel, the earlier the invite goes out. A casual dinner needs about a week. A milestone birthday with family flying in needs a save-the-date a couple of months ahead.
These are rules of thumb, so adjust them for your crowd and your calendar.
Lead times at a glance
| Party | Send the invite | Set the RSVP-by date |
|---|---|---|
| Casual dinner at home | 1 to 2 weeks ahead | 2 or 3 days before |
| Dinner party with a set menu | 2 to 3 weeks ahead | About 1 week before |
| Birthday party | 3 to 4 weeks ahead | 1 to 2 weeks before |
| Kids’ birthday party | 3 to 4 weeks ahead | About 1 week before |
| Milestone birthday | Save-the-date 6 to 8 weeks out, invite 4 to 6 weeks out | About 2 weeks before |
| Wedding or baby shower | 4 to 6 weeks ahead | About 2 weeks before |
| Holiday party in December | 4 to 6 weeks ahead | 1 to 2 weeks before |
| Guests coming from out of town | Save-the-date 2 to 3 months out | Whenever your venue needs a number |
Dinners
A casual dinner at your place is the easiest call. A week’s notice is plenty, and two weeks is generous. Your friends know their own weeknights; you just need to land on their calendar before something else does.
A more formal dinner party (a set menu, a fixed number of chairs, maybe a meal choice) deserves two to three weeks. You need answers early enough to shop, and guests appreciate time to find a sitter.
Birthdays
For a regular birthday party, send the invite three to four weeks ahead. Any less and weekends start to fill up. Much more and people forget about it.
Kids’ parties follow the same window. Parents juggle a lot of weekend events, so three weeks is a good minimum.
Milestone birthdays
Thirty, forty, fifty and beyond are different. Family may travel, the venue probably needs a deposit and a headcount, and people want time to plan a toast or a gift.
- Six to eight weeks out: send a save-the-date with the date, the city, and a note that details are coming.
- Four to six weeks out: send the full invitation with the time, place and RSVP-by date.
- About two weeks out: collect your final answers so the venue has a number.
Showers
Wedding and baby showers usually go out four to six weeks ahead. Guests often shop from a registry and some travel, so they need the lead time. For a wedding shower, a common rule of thumb is to hold it a few weeks to a couple of months before the wedding.
The holiday season
December is the one month when you’re competing with everyone: office parties, school concerts, family travel. Send holiday invites four to six weeks ahead, which means late October or early November for a mid-December party. If you host the same party every year, a quick “save the date” text in October keeps your night claimed. letsparty’s Your year lays out the birthdays and holidays you host twelve months ahead, with an email when it’s time to plan if you want one.
Out-of-town guests
When people need to book flights or hotel rooms, two to three months is the floor. Send a save-the-date as soon as the date and city are firm, and include anything that helps travelers plan: the nearest airport, a hotel or two nearby, and whether the party is one evening or a whole weekend.
When a save-the-date makes sense
You don’t need one for every party. Send one when:
- Guests will travel, or the date falls on a holiday weekend
- The party is big enough that you need an early sense of the headcount
- The date is set but the details (venue, time, menu) aren’t
A save-the-date can be short: who, what, the date, and “invitation to follow.” The real invite comes later with the time, address and RSVP-by date. If the date itself isn’t settled, a letsparty date poll lets guests mark the dates that work before you commit.
Picking an RSVP-by date
Work backward from whoever needs your final number first: the caterer, the restaurant, the venue or the bakery. Ask for their deadline, then set your RSVP-by date a few days before it. That buffer gives you time to follow up with people who haven’t answered.
If no one needs a number from you, about a week before the party works for most gatherings.
A few tips:
- Write the day and the date: “Please reply by Friday the 12th.” A specific day is easier to remember than “soon.”
- Give people at least a week between getting the invite and the RSVP-by date.
- Plan on a friendly nudge a few days before the deadline. It’s normal, and it isn’t pushy.
If you’re short on time
Late invites still work. Text people directly, keep it short, and be honest: “Last-minute, but we’d love to have you Saturday.” Then set the RSVP-by date a couple of days out.