---
id: post/thatnavguy-com/https-thatnavguy-com-blog-2026-bc-prices-incl-vat-prod-posting-group--3b717ab825
type: post
title: Change Behaviour on VAT Prod. Posting Group - Prices Incl. VAT in v28.2
summary: Business Central v28.2 changed how it handles VAT Product Posting Group changes on G/L Account purchase lines when Prices Incl. VAT is enabled. Previously the total including VAT remained constant, but now the unit cost recalculates and the total amount decreases.
tier: community
language: en
tags:
  - vat
  - pricing
  - purchase orders
  - behavior change
  - posting groups
system: purchasing
review:
  state: reviewed
  by: opus
  at: "2026-10-07T23:47:06.962Z"
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  at: "2026-10-07T22:42:12.892Z"
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evidence:
  - kind: blog
    url: https://thatnavguy.com/blog/2026/bc-prices-incl-vat--prod-posting-group/
    title: Change Behaviour on VAT Prod. Posting Group - Prices Incl. VAT in v28.2
    date: "2026-08-24"
    commit: null
    t: null
    quote: null
  - kind: blog
    url: https://thatnavguy.com/blog/2026/bc-prices-incl-vat--prod-posting-group/
    title: Change Behaviour on VAT Prod. Posting Group - Prices Incl. VAT in v28.2
    date: "2026-08-24"
    commit: null
    t: null
    quote: BC has always kept the Direct Unit Cost for G/L Account lines when you change the VAT Product Posting Group.
  - kind: blog
    url: https://thatnavguy.com/blog/2026/bc-prices-incl-vat--prod-posting-group/
    title: Change Behaviour on VAT Prod. Posting Group - Prices Incl. VAT in v28.2
    date: "2026-08-24"
    commit: null
    t: null
    quote: If you're on v28.2 and you use Prices Incl. VAT with G/L Account purchase lines, it's worth to be cautious about this.
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post_id: https://thatnavguy.com/blog/2026/bc-prices-incl-vat--prod-posting-group/
source_id: thatnavguy-com
source_name: That NAV Guy
url: https://thatnavguy.com/blog/2026/bc-prices-incl-vat--prod-posting-group/
published_at: "2026-08-24T00:00:00.000Z"
author: Teddy Herryanto
full_text: false
words: 257
quotes:
  - text: BC has always kept the Direct Unit Cost for G/L Account lines when you change the VAT Product Posting Group.
    why_it_matters: Explains the historical expected behavior that users relied on before v28.2
  - text: If you're on v28.2 and you use Prices Incl. VAT with G/L Account purchase lines, it's worth to be cautious about this.
    why_it_matters: Provides actionable guidance for users who may be affected by this regression
code_objects_mentioned: []
systems:
  - purchasing
  - finance
versions_mentioned:
  - "28.2"
preview:
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---

# Change Behaviour on VAT Prod. Posting Group - Prices Incl. VAT in v28.2

[Read the post](https://thatnavguy.com/blog/2026/bc-prices-incl-vat--prod-posting-group/) · That NAV Guy (Teddy Herryanto, MVP) · 2026-08-24 · 257 words · tier community · reviewed (checked by Opus)

> Business Central v28.2 changed how it handles VAT Product Posting Group changes on G/L Account purchase lines when Prices Incl. VAT is enabled. Previously the total including VAT remained constant, but now the unit cost recalculates and the total amount decreases.

## Key points

- VAT Product Posting Group changes on G/L Account lines now recalculate the direct unit cost when Prices Incl. VAT is true
- The total including VAT no longer stays constant after a VAT posting group change
- Build w1-28.2.50931.51034 introduced this change by including G/L Account lines in the unit cost update logic
- Sales line logic remains unaffected by this change

## Quotes

- "BC has always kept the Direct Unit Cost for G/L Account lines when you change the VAT Product Posting Group." (Explains the historical expected behavior that users relied on before v28.2)
- "If you're on v28.2 and you use Prices Incl. VAT with G/L Account purchase lines, it's worth to be cautious about this." (Provides actionable guidance for users who may be affected by this regression)

## Context

- Features: Prices Incl. VAT, VAT Product Posting Group, Direct Unit Cost recalculation
- Versions: 28.2

Source: That NAV Guy, community blog. Summary, key points and quotes are derived (CONTENT-NOTICE.md); read the original for the full text.