@user0345437398.
That post is classic, but shows a lack of understanding. In business we must make sure things are posted in the correct month. It's all about timings.
As a previous poster explained, management accounts are all about producing accounts for the month.
You did the work that month. In September. But you haven't billed the client yet, in September. But you did so the work, in September. So the sales invoice really needs to be attributed to, posted to September. That's what accounts will make happen.
Likewise on the other side of things: one of your suppliers did some work for you in September. They haven't yet billed you yet though. Haven't sent you their September invoice. But it's now October. So accounts knowing you actually did have a cost in September, that relates to September, will put through a journal, a provision, to post that cost of say £3k to September. For the building work your supplier did actually do for you in September. But they (supplier) haven't yet sent their invoice, to you.
so when the invoice does actually come in, in October, it's posted, processed and paid. It might well be paid in October. Or even in November, in the next bacs run.
but when it was paid, it's kind of immaterial. It's not actually relevant very much. (I mean it matters to the accounts people cause it matters to their cash flow. Ie when It comes out of the bank)
but in the management accounts it doesn't actually matter when it was actually paid.
because the fact is, if you remember, it was posted in September. which is the rightful place for it to be , because that's when the person actually did the work for you. and that's why the cost needs to be posted in September, as it was, because accounts made that happen.
Does that help?