Compliant by default,
not by afterthought.
Tax is calculated where it happens — on the document — and reported the way your authority expects. Keep your books in naira with VAT at 7.5%, tax-correct invoices and real-time financial reports.
VAT 7.5% on every line
inclusive or exclusive, with reverse charge
India: GSTR-1 & 3B
prepared from your actual invoices
KSA: ZATCA Phase 2
signed e-invoices, QR codes, clearance
Tax handled at the source.
Filing is only stressful when the underlying documents are wrong. Get tax right per line, per document, and the return becomes arithmetic.
- ✓ Per-line tax rates — each item carries its rate; mixed-rate documents just work.
- ✓ Inclusive or exclusive pricing — match how your market quotes prices; the math extracts the tax correctly either way.
- ✓ Reverse charge — self-assessed VAT 7.5% on applicable purchases and sales posts correctly, automatically.
- ✓ Tax position on demand — output vs input tax, net payable or receivable, per filing period.
- ✓ Credit and debit notes — returns reverse tax exactly, keeping the return tied to reality.
GST without the spreadsheet marathon.
GSTR filings assembled from your actual invoices and purchases — not from a re-keyed export.
- ✓ GSTR-1 and GSTR-3B — prepared from your real documents, with readiness checks before filing.
- ✓ CGST / SGST / IGST split — computed correctly by place of supply for the reports.
- ✓ HSN/SAC on items — carried onto documents and into the filing detail.
- ✓ Export for your filing flow — take the prepared figures to your portal or practitioner.
ZATCA Phase 2, actually built in.
E-invoicing that clears with the authority in the background — validated against ZATCA's own sandbox.
- ✓ Signed UBL e-invoices — cryptographically signed XML with the QR code printed on the invoice.
- ✓ Clearance and reporting — standard invoices clear, simplified invoices report, automatically and asynchronously.
- ✓ Credit notes as e-invoices — corrections follow the compliant path too.
- ✓ Device onboarding managed — CSID issuance and renewal handled inside OneBooks.
Tax & compliance — common questions
Does OneBooks support tax-inclusive pricing?
Yes — choose inclusive or exclusive per business. The engine extracts or adds VAT 7.5% correctly either way, per line, so documents match how your market actually quotes prices.
Is reverse charge supported?
Yes, end to end: reverse-charge purchases post the self-assessed tax and its input credit automatically, and reverse-charge sales are handled correctly on documents and in reports.
How does GSTR filing work in India?
OneBooks prepares GSTR-1 and GSTR-3B from your actual invoices and purchases, with readiness checks that catch missing data before you file, and exports the prepared figures.
What do I need for ZATCA Phase 2 in Saudi Arabia?
A OneBooks account and your ZATCA onboarding details. Device onboarding, XML signing, QR codes and clearance all run inside OneBooks — invoices you send are cleared e-invoices.
Can I use OneBooks in Nigeria?
Yes. OneBooks keeps your books in Nigerian naira with 7.5% VAT, tax-correct invoices and full financial reports.
Make the return the easy part.
Start free and let every document carry its tax correctly from day one.