Book the venue
12-18 months ahead
Premium venues book out the furthest. Date is venue-dependent.
Reference timeline · 16 min read
A realistic month-by-month wedding planning checklist for a 80-150 guest wedding. The six deadlines that cannot move. The window where most couples slip behind. And the post-wedding loops most checklists forget to close.
Published June 10, 2026 · By Mariane Youssef
Everything else has slack. These six do not. Slip on one and the rest of the timeline compresses dangerously.
12-18 months ahead
Premium venues book out the furthest. Date is venue-dependent.
10-12 months ahead
Highest-demand vendors after the venue. Often booked across multiple weekends per year.
10-11 months ahead
International guests need 6+ months to book affordable flights.
3-6 months ahead
RSVP needs 6-8 weeks. Working backwards: invites go out 3 months before for local, 6 months for destination.
6-8 weeks ahead
Caterers need final headcount 30-45 days out. RSVP cliff at week 8-6 protects your headcount.
2-7 days ahead
Most vendor contracts schedule the final 25-50% the week of. Plan cashflow accordingly.
The venue is the only month-12 task that has hard scarcity — most premium venues book out 14-18 months ahead. The other tasks can shift; this one cannot.
Save-the-dates have moved from paper-only to digital-first. The reason: international guests now need 6+ months to book affordable flights, and they need that confirmation early. Send digital first; send paper later if you want.
The hardest part of this window is making aesthetic decisions without the venue being decorated yet. Anchor each decision to the venue's existing texture (stone walls? wooden floors? glass? marble?) and the time of year (golden October? cold blue January? bright June?). Don't anchor to Pinterest.
Digital invitations cut the stationery line from 1,500-3,000 EUR to under 400 EUR, give you live RSVP analytics, and let you re-send to non-responders without re-printing. This is the line where 70% of couples now go digital.
RSVP tracking is the single most underestimated time-sink between months 5 and 1. A platform that handles per-event RSVP, dietary intake, plus-ones and reminder logging in one place saves 10-20 hours of admin compared to a spreadsheet.
Month 3 is the first deadline where you cannot push tasks. Vendors lock their bookings here; the menu freezes; the seating chart starts to crystallise. If you're behind here, you'll be behind on the day.
The headcount you confirm with the caterer in month 2 is the headcount you pay for — even if 5 guests bail in week 1. Don't confirm a single guest more than the count you can pay for.
The day-of timeline is the document that prevents a 6am phone call on the wedding day. Every vendor knows their arrival time, their slice of the schedule, and their dependency on others. A real-time day-of coordinator app makes this living rather than static.
Two weeks out, every task is a small one — but there are 30 of them. This is when the wedding planner earns their fee. If you're self-planning, designate one trusted friend as the "week-of POC" — they handle vendor calls and you don't.
If you've followed the timeline, the wedding week should feel quiet — not stressful. The stressful weeks are 3 and 2 (RSVP cliff + headcount finalisation); week 0 is mostly closing loops. If you're stressed in week 0, something earlier slipped.
Thank-you notes have a 2-month window before they stop reading as gracious and start reading as overdue. Block 2 hours per weekend in months 1-2 post-wedding to write 10-15 per session.
The platform built for this
Website + invitations + RSVP + seating + budget + vendors + day-of timeline. 30+ tools, one login. The checklist auto-seeds based on your wedding date. Free to start.
12-18 months for a 80-150 guest wedding at a popular venue. The bottleneck is venue availability — most premium venues book out 14-18 months ahead, locking the date. Smaller civil ceremonies can be planned in 3-6 months. Eloping: as little as 2-4 weeks if you have a flexible officiant.
Booking the venue. Every other deadline cascades from there. If you can't get the date you want, you have to re-plan everything around it. Lock the venue first, then build the timeline backwards from it.
3 months ahead for local weddings (where guests need ~6 weeks to RSVP). 6 months ahead for destination weddings (where guests need to book flights and accommodation). Digital save-the-dates go out 10-11 months ahead so guests can block calendars early.
Within the first week of engagement, before any vendor conversation. The single biggest cause of budget overshoot is starting with vendor quotes (which anchor expectations high) instead of starting with a target total. Set the number, then shop within it.
6-8 weeks before the wedding. This gives you enough margin to confirm the headcount with the caterer (who needs 30-45 days), to finalise the seating chart, and to send second-round reminders to non-responders. Earlier than 6 weeks and guests forget; later than 8 weeks and you're rushing the caterer.
Yes, if your guest count is over 50 and you have multiple events. Spreadsheets break at multi-event RSVP with dietary preferences, plus-ones and seating dependencies. A platform like e-invitation wedding handles the website + RSVP + seating + budget + vendors + day-of timeline in one place — free to start.
Underestimating month 3 to month 1. The first 9 months feel productive; the last 3 are where everything you didn't anticipate hits at once. Reserve 5-8 hours per week for those months. Hire a day-of coordinator if you can — they save the marriage by saving the day.
Within 2 months of the wedding for full gracious credit. Notes sent in months 1-2: gracious. Months 3-4: late. Months 5+: read as careless. Block 2 hours per weekend post-wedding to write 10-15 notes per session.