SafeTex (asker) Nov 9, 2017:

@ Peter Hello

I agree and I use the expression "on the tab" but I went for "on account" here simply due to the level of formality, as you said.

What got me was the "av" in "avräckning" which gave me the impression that it was pre-paid and each drink taken off the remaining sum of money but Agneta thinks not and she has a pair of Swedish ears so...

Thanks for your input.

Peter Linton (X) Nov 9, 2017:

Prepaid or not The more I look at it, the more I think that a "tab" is exactly what is meant here.
The restaurant in this case is offering a tab facility to set up a tab for the party-giver's guests.
It is prepaid in the sense that a tab guarantees payment, only the amount remains to be settled.
That is surely as good as "prepaid" or "on credit".
I once organised a drinks party (for an English translators' association!). Before the event I printed out tickets each with a price (£5). Then I handed my credit card to the restaurant manager, and gave each guest one ticket (or 'voucher') entitling them to one free drink for up to £5. After that it was a normal cash bar. At the end of the event the manager gave me all the vouchers collected by the bar staff plus an invoice, and I settled the bill.
However 'tab' may be too informal for a price list like this, so if in doubt I would use 'on account'.

Agneta Pallinder Nov 4, 2017:

@ASKER I don't think it is prepaid - here is another example of a party venue that offers drinks "på avräkning, mot faktura" and invites the prospective customer to ask for a quotation: www.garantcatering.se/s/Bellevue_fest-atnn.pdf

SafeTex (asker) Nov 4, 2017:

@ Agneta Hello

I had "charged to a pre-paid account" as the "av" in "avräkning" suggested to me that it was taken off something already paid. What do you think please?