1. Help
  2. Till and payments
  3. Closings: days, months, and the chain of Zs

Closings: days, months, and the chain of Zs

One or more till "Z" readings a day depending on your sessions, closings that chain themselves on their own, month after year, and the perpetual grand total.

Updated on 19 September 2026 2 min readBy the Buiiild teamIntermediate
Open this screen in my studio
In this article

On top of days, you archive the month in one click — or, under the new compliance regime, you let the till do it on its own.

The history of closings. | Buiiild.com
The history of closings.

Closing the month

Closing the month. | Buiiild.com
Closing the month.

The button only shows if the month has sales, hasn't already been closed, and your salon hasn't yet moved to the new compliance regime: that regime then chains closings on its own — day, month, year and fiscal year — as soon as each one ends, with no click needed.

Several "Zs" a day

A single day can carry several session closings: open up, take sales, close the till at midday, reopen it in the afternoon — each session gets its own "Z", all attached to the same day.

The history of your "Zs"

Each line is a locked period. Click it to open the figures in detail, then print it on plain A4: it's the document to hand over in an audit, or to attach to your accounts. A Demo tag marks closings recorded before your first real sales: they carry no fiscal value.

The chain of closings

The chain of closings: numbered with no gap, linked by fingerprint. | Buiiild.com
The chain of closings: numbered with no gap, linked by fingerprint.

Closings are numbered with no gap and chained to each other by their fingerprint. A missing number would show up immediately: that's exactly what the law requires your software to guarantee.

What a closing contains

Total including tax, total excluding tax, VAT broken down by rate, tips, payment methods, and the perpetual grand total — the running total of everything your till has taken since it opened. This total never goes down: that's what makes a deleted sale impossible to hide.

Frequently asked questions

Can I redo a closing that's already been done?

No, a closing is never redone. That's exactly what makes your figures binding: a locked period stays locked.

The "Close the month" button doesn't appear

Under the new compliance regime, it never shows again: closings chain themselves. Otherwise, it only shows if the month contains sales and hasn't already been closed — also check that every day of the month has itself been closed.

Why does my day carry several "Zs"?

Because the till went through several sessions that day: each opening and closing of the till gets its own closing, all attached to the same day.

What is the perpetual grand total?

It's the running total of everything your till has taken since it opened. It never goes down, even after a credit note: that's what makes a deleted sale impossible to hide.

What document should I give my accountant?

A printed monthly closing is enough in most cases. For a specific period, download the full archive from Tax archives.

Was this article helpful?

Go further

Need a hand?

Write to us from your studio, under “Help & support”: we answer quickly, with real people.

Closings: days, months, and the chain of Zs · Buiiild