但(ただ)し書(が)き

ただしがき
noun
proviso; stipulation; receipt itemization
formallegalbusinesscommunication
1. proviso; stipulation; caveat
A clause or condition added to a document, rule, or statement that qualifies or limits the main content. Common in legal, contractual, and official documents.
Check the proviso in the contract.
This rule has a proviso that allows exceptions.
Legal provisions often have a proviso attached after the main text.
2. itemization on a receipt; description field
The line on a receipt or invoice that specifies the purpose of payment, such as "for books" or "for meeting expenses."
領収書(りょうしゅうしょ)の但(ただ)し書(が)きに「書籍代(しょせきだい)」と書(か)いてください。
Please write "book expenses" in the itemization field of the receipt.
但(ただ)し書(が)きは「お品代(しなだい)として」でよろしいですか。
Is "for merchandise" okay for the receipt description?
For expense reimbursement, I had them write specific details in the receipt's description field.

Usage

但(ただ)し書(が)き has two distinct uses: as a legal/formal proviso (sense 1) and as the description line on receipts (sense 2). Both senses involve writing that specifies or qualifies something.

USAGE (Sense 1):
In legal documents, a 但(ただ)し書(が)き begins with 但(ただ)し (however) and introduces conditions, exceptions, or limitations to the main provision.

USAGE (Sense 2):
When purchasing items in Japan, shops often ask how to fill in the 但(ただ)し書(が)き field. Common entries include お品代(しなだい) (merchandise), 書籍代(しょせきだい) (books), 飲食代(いんしょくだい) (food and drink).