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The Complete Wedding Planning Checklist & 12-Month Timeline

Everything to do, in the right order, at the right time: month-by-month tasks, a realistic budget breakdown, the correct vendor booking sequence, and the details couples most often forget.

Updated July 2026 · By the makers of Big Day Wedding Planner

How far in advance should you start planning a wedding?

Short answer: start 12 months out. Venues and in-demand photographers book 9–14 months ahead, so your first three months of planning decide whether you get the date and team you actually want.

A 12-month runway is the sweet spot: long enough to book first-choice vendors and pay deposits gradually, short enough that momentum doesn't die. Planning on 6 months? Everything below still applies — compress the first six months of tasks into your first six weeks and stay flexible on venue and date.

The 12-month wedding planning timeline

Work through these in order. Each block builds on the one before it — the venue's date and capacity constrain the guest list, the guest list constrains the budget, and the budget constrains everything else.

12–10 months before
  • Set the budget first. Agree the total number and who contributes what before touring a single venue.
  • Draft the guest list. Even a rough count — it determines venue size and roughly half your costs.
  • Choose 2–3 possible dates. Flexibility here is your strongest negotiating tool.
  • Book the venue. The single most date-critical booking. Everything else waits for this.
  • Book the photographer. The good ones are gone 12+ months out.
  • Start a planning system — a dedicated wedding planner app or binder, not scattered notes and spreadsheets.
9–8 months before
  • Book the caterer (if not included with venue) and schedule the tasting.
  • Book band or DJ, then florist and videographer.
  • Choose the wedding party and ask them properly.
  • Start dress / attire shopping. Made-to-order gowns need 6–8 months plus alterations.
  • Block hotel rooms for out-of-town guests.
7–6 months before
  • Send save-the-dates (8–12 months out for destination weddings).
  • Book officiant, hair & makeup, and transport.
  • Order invitations and plan the stationery suite.
  • Plan the honeymoon — passports, visas, and vaccinations take time.
  • Register for gifts.
5–4 months before
  • Order the cake after a tasting.
  • Finalize the menu and bar package. Collect dietary requirements as RSVPs arrive.
  • Buy wedding rings.
  • Book the rehearsal dinner venue.
  • Attire for the wedding party ordered and fittings scheduled.
3–2 months before
  • Mail invitations at 8 weeks; set the RSVP deadline at 3–4 weeks before the wedding.
  • Write vows and choose readings.
  • Build the music plan: key moments, must-plays, and a do-not-play list.
  • First dress fitting. Final fitting at 2–3 weeks out.
  • Confirm the payment schedule — most vendor balances fall due in the final month. Missing one is the classic budget blow-up.
Final month & wedding week
  • Chase RSVPs and finalize the headcount for the caterer (usually due 10–14 days out).
  • Build the seating chart once numbers are final — never before.
  • Create the day-of schedule, hour by hour, and share it with every vendor.
  • Appoint a day-of contact who is not you — vendors call them, not the couple.
  • Pack an emergency kit: sewing kit, stain wipes, pain relief, phone chargers, snacks.
  • Confirm every vendor by phone or email in the final week: arrival time, location, contact person.

Do this digitally

This entire checklist, as an interactive app

The Big Day Wedding Planner turns this timeline into a living checklist with real deadlines calculated from your actual wedding date — plus budget tracking, guest list & RSVP, seating chart, and vendor manager. One-time purchase, no account, no subscription, and your data never leaves your device. There's also a free wedding planner you can use right now, no signup.

Wedding budget breakdown: where the money actually goes

Rule of thumb: venue + catering eat 40–45% of any wedding budget. Whatever your total, allocate by percentage first, then adjust — and always keep a 5–10% contingency.
CategoryTypical share
Venue & catering40–45%
Photography & videography10–12%
Music & entertainment8–10%
Flowers & decor8–10%
Attire, hair & makeup7–9%
Stationery & postage2–3%
Transport2–3%
Cake~2%
Rings2–3%
Contingency buffer5–10%

Two costs couples consistently underestimate: vendor meals (your photographer, DJ, and coordinator eat too — ask the caterer for vendor-meal pricing) and alterations, which can add 10–20% on top of the dress price.

The correct order to book wedding vendors

Booking out of order is the most common expensive mistake — a florist booked before the venue may not suit the space, and a band booked before the date is locked may not be available.

  1. Venue — sets date, capacity, and style for everything else
  2. Photographer — one per day; the best book earliest
  3. Caterer — if not bundled with the venue
  4. Band or DJ
  5. Florist
  6. Videographer
  7. Hair & makeup
  8. Officiant
  9. Transport
  10. Stationery

The 7 wedding planning mistakes couples regret most

  1. Building the seating chart before RSVPs close. You will redo it. Wait for final numbers.
  2. No payment schedule. Multiple vendor balances land in the same final month; track deposits and due dates from day one.
  3. Skipping the do-not-play list. Tell the DJ what not to play — it matters more than the request list.
  4. Being the day-of contact yourselves. Give vendors a friend's or coordinator's number.
  5. Forgetting vendor meals in the headcount and budget.
  6. Underweighting invitation postage. Heavy suites need extra stamps — weigh a complete one before mailing 100.
  7. Keeping the plan in five different places. Spreadsheet + notes app + Pinterest + email = things fall through. One system, one source of truth.

Wedding planning FAQ

Can you plan a wedding in 6 months?

Yes — thousands of couples do. Compress the 12–8 month tasks into your first six weeks, stay flexible on venue and date (weekday and off-season dates have far more availability), and consider ready-to-wear attire instead of made-to-order.

What should you do first when planning a wedding?

In strict order: set the total budget, draft a rough guest count, pick 2–3 candidate dates, then book the venue. Every other decision depends on those four.

Is there a wedding planner app without a subscription?

Yes. Big Day Wedding Planner is a one-time purchase — no subscription, no account, and all data stays on your own device. It covers this whole checklist interactively: timeline with real deadlines, budget tracker, guest list & RSVP, vendor manager, and (in Premium) seating chart, day-of schedule, and honeymoon planner. A free edition with no signup is available too.

How do you keep wedding planning data private?

Avoid tools that require accounts and store guest data in the cloud. A local-first planner keeps your guest list, budget, and notes in your own browser on your own device — nothing is uploaded, and there's no server to leak it.

When should wedding invitations be sent?

Mail invitations 8 weeks before the wedding (save-the-dates at 6–8 months, or 8–12 for destination weddings). Set the RSVP deadline 3–4 weeks before the day so the caterer gets final numbers on time.

Turn this checklist into your actual plan

Big Day Wedding Planner puts the full timeline, budget, guests, vendors, and seating into one beautiful app. Pay once, own it forever, keep your data private.

Explore Big Day Wedding Planner →

or start with the free planner — no signup →