- Preview Posting shows every ledger entry a transaction will create before you commit anything.
- Nothing is saved during a preview, so you can inspect the full accounting impact risk-free.
- It is the fastest way for new users to understand and trust what Business Central does on their behalf.
- It catches wrong accounts, wrong periods, and odd tax entries before they become a cleanup project.
Earlier this month, a finance team that had just moved onto a new ERP showed it in the way their cursor hovered over the Post button.
They'd come from a spreadsheet, and one question sat in the back of their minds: "If I click this, what's it actually going to do to my books?" That's a fair worry. In Dynamics 365 Business Central, Microsoft's enterprise resource planning (ERP) system for small and mid-sized businesses, one click can ripple through the general ledger, the customer's balance, and your inventory value at once. When you can't see that happening, every post feels like a leap of faith.
Business Central has a feature that removes the guesswork. It's called Preview Posting, and it does what the name promises. Before you commit a transaction, it shows you every accounting entry that transaction is about to create. Nothing's saved, nothing's posted, and you can look as many times as you like.
What the preview shows you
When you choose Preview Posting on a document or a journal, Business Central runs the full posting routine without saving the result, then lays out the entries that would be created, grouped by the ledger they touch:
- General ledger entries. The debits and credits that would hit your chart of accounts. You see exactly which accounts move, and by how much.
- Sub-ledger entries. Depending on the transaction, this can include customer entries, vendor entries, item ledger entries for inventory, value entries for cost, VAT or sales tax entries, and bank entries.
If a sales invoice is going to debit accounts receivable, credit revenue, relieve inventory, and record the cost of goods sold, all four are laid out for you to inspect while you can still change your mind.
Why it builds confidence and catches mistakes
For someone still learning the system, Preview Posting is the fastest way to understand what Business Central is doing on your behalf. The Post button stops being a black box. For everyday work, it's a quiet safety net. A few things it routinely catches:
- A transaction pointed at the wrong general-ledger account, often from a setup or template that needs adjusting
- A posting about to hit the wrong period or date
- An inventory transaction that isn't going to value the way you expected
- A tax entry that looks off and signals a configuration issue
Catching any of these before you post is a thirty-second check. Catching them afterward can mean a correcting entry, a reversal, or an awkward conversation with your accountant about why the books don't look right. The preview is almost always the cheaper path.
Where you'll find it
Preview Posting lives right where the posting happens. You'll find it on the documents and journals your team works with most:
- Sales documents, such as orders and invoices
- Purchase documents, such as orders and invoices
- The general journal and other financial journals
- Many of the specialized journals throughout the system
The button sits next to the Post action, so previewing first becomes a reflex rather than a detour you have to remember. Plenty of finance teams make it standard practice for anyone still learning, and for any transaction that's unusually large or just unusual.
A small habit with an outsized payoff
There's nothing complicated about Preview Posting. It doesn't change what Business Central can do. It changes how comfortable your team feels doing it. People post more confidently, ask fewer "did I just break something" questions, and catch their own mistakes early.
So if your team's new to Business Central, build the habit early. Preview first, read the entries, then post. Within a few weeks it becomes second nature.
Let's talk it through
If you're getting started with Business Central and want your team to feel genuinely confident in it, the small habits often matter as much as the big configuration decisions. We're happy to share the practices we set up for new finance and operations users so the system feels like a tool they trust rather than one they tiptoe around. Reach out anytime, and we'll walk you through it.