How to word RSVP deadline for wedding?

Short answer

Write the deadline clearly and simply, for example: "Kindly reply by 1 June 2025." Add a line like "We would love to hear from you by this date so we can confirm numbers with our venue." This is polite and practical.

Your RSVP wording should be warm, clear and easy to understand. Start with a friendly request, such as "We would be grateful if you could let us know whether you can join us by [date]." Then add a short reason, like "This helps us confirm final numbers with our venue and caterer." This explains why the date matters and encourages people to reply promptly.

If you are using a wedding website, include the same deadline on the invitation and on the website. You could say: "Please RSVP online at [your website] by [date]. If you prefer, you can reply using the enclosed card." Make sure the date is written in full, for example "Saturday 1 June 2025", to avoid confusion between British and American date formats.

For guests who might need extra time, you can add a gentle note: "If you have any questions or need more time, please get in touch." But keep the deadline firm. Avoid vague phrases like "at your earliest convenience" because they invite delay. A clear, polite deadline shows you are organised and considerate, and it makes life easier for everyone.