• Aug 17, 2026
• 5 min read

Why Your Self-Assessment Computations Might Differ from Portal Auto-Populated GST R 3b

Understand why gst r 3b figures differ from your self-assessment, including portal data, rounding, late uploads, and reconciliation tips.

If the figures you calculated for gst r 3b do not match the numbers auto-populated on the GST portal, do not assume that either figure is automatically wrong. In practice, differences can arise because your books, accounting software, source documents and the GST portal may follow different data timelines and...

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