Every date
counted back from your day

01

Every interval it uses, printed.

Nothing here is hidden inside the calculator. These are the intervals it counts back from your date, so you can disagree with any of them knowingly. The first six match the invitation timing calculator exactly — two tools on this site giving different send dates would be a fault, not a nuance.

Two of these scale with the size of your list, because two of them are per-envelope and per-person work. Past about 120 guests, addressing gains a week and the chase gains four days; past 250, addressing gains a fortnight and the chase a week. Everything else is the same amount of work at fifty guests and five hundred, so nothing else moves.

02

Why a destination wedding moves everything.

It is not politeness. Each shift is forced by something outside your control, and knowing which thing tells you which dates are negotiable.

Leave is claimed months ahead. A guest flying to your wedding is not deciding whether they would like to come; they are deciding whether to spend a week of annual leave and the cost of two flights. In most workplaces that request goes in long before the year gets busy. A save-the-date that arrives after the rota is set does not get a considered answer — it gets a decline. That is why the destination save-the-date goes a full year out, and why the guest list has to be locked fourteen months out to make it possible.

Nobody can accept an invitation they cannot price. A held room block is worth nothing until guests are told it exists, and blocks expire. Publishing the hotel, the nearest airport and a realistic per-person cost roughly two weeks after the save-the-dates is what converts interest into replies. Left until the invitation, you get three months of silence and then a rush of questions you have to answer individually.

Your printed pieces travel with you. This is the constraint almost nobody plans for. Place cards, table numbers, menus and signage have to be finished, checked and packed before you get on a plane — which is usually a fortnight before the wedding, not the week of it. A local wedding absorbs a late change by reprinting one place card the day before. A wedding abroad cannot absorb it at all: the case is already closed.

So the destination RSVP deadline sits six weeks out rather than four. It is not stricter for its own sake. The deadline is set by the day your luggage closes, and everything upstream is spaced backwards from there.

One honest caveat the calculator cannot apply for you: expect a materially higher rate of declines than a local wedding, and do not plan catering, seating or stationery quantities as though everyone invited will come. We are not going to put a percentage on that — it depends on where you are asking people to go, what it costs them, and how much notice they got, and any single figure quoted at you is somebody's guess dressed up as data.

03

Three deadlines that are not the same date.

The last month is where wedding stationery goes wrong, and almost always for the same reason: three separate deadlines get treated as one.

• The RSVP deadline is yours. You choose it, you print it on the reply card, and you can chase past it without consequence. It exists to give you a working number early enough to do something with, which is why it is set well before anyone else needs anything from you.
• The final headcount is the venue's. It sits in the catering contract, it is usually a fortnight out, and missing it costs money rather than goodwill. Ask your caterer what the real tolerance is — most hold a few covers either way, and that number is worth more than another week of chasing.
• The seating plan is a third thing, and it comes after the headcount. Catering counts covers; seating places named people at named tables. They are different jobs with different inputs, and collapsing them into one date is what produces the familiar scene of a plan being redrawn at midnight. The generator puts the seating plan four days after the headcount, deliberately.
• Then, and only then, the day-of stationery. Place cards carry a guest's name and table; table numbers depend on how many tables you ended up with. Neither can be produced before the seating plan is finished, which makes them the last things printed and the reason a design commission cannot be left late — the pieces are made early, but they are filled in last.

04

What this cannot know about your wedding.

It assumes a printer who wants about three weeks and a designer who needs time before that. Ask both for their real lead times; if either is longer, the commission date moves left and takes the save-the-date with it.

It assumes your venue wants final numbers a fortnight out. Some contracts say four weeks, a few say ten days. That single figure moves the whole tail of the schedule, so it is worth reading the contract rather than assuming the convention.

It knows nothing about the paperwork. Banns, licences, civil registration abroad and any religious preparation have their own deadlines, some of which are earlier than anything on this list and none of which are negotiable. Find them before you print a date on anything.

And it cannot tell you whether your guests read post. If a meaningful part of your list is abroad, older, or simply unreachable by letter, the send dates here are still right but the reminder dates matter far more than the deadline does.

05

Common questions

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