Proforma before you bill
Generate a print-ready proforma estimate straight from a job's costing — save it as a PDF in a tap — so the client sees the number before the work, not a surprise after.
Invoicing
Proformas and GST invoices your client's auditor accepts
A practice's own invoices get scrutinised harder than anyone's — your clients are auditors. T4Suite raises a GST-ready proforma from a job's costing before you bill, then turns it into a tax invoice with the tax split, HSN/SAC summary and amount-in-words done correctly, every time.
And when the billing entity isn't GST-registered, it issues a compliant Bill of Supply instead — no manual switching, no wrong document.
GST tax invoice, done right
CGST + SGST for intra-state, IGST for inter-state — split automatically from the GSTIN's state — with a per-HSN/SAC tax-summary table and the amount written in Indian lakh/crore words.
Bill of Supply for non-GST entities
Flag an entity as unregistered and T4Suite issues a Bill of Supply with no GST instead of a tax invoice — the right document for the entity raising it.
Approvals and credit notes
A junior prepares an invoice; it leaves the firm only when a partner approves it. Issued invoices are permanent records — reverse or correct one with a compliant credit note rather than deleting a raised bill.
Questions firms ask
Does T4Suite split CGST, SGST and IGST automatically?
Yes. It reads the GSTIN's state code and applies CGST + SGST for intra-state supply or IGST for inter-state, with a per-HSN/SAC tax-summary table on the invoice.
Can it issue a Bill of Supply for an unregistered entity?
Yes. If the billing entity is flagged as not GST-registered, T4Suite issues a Bill of Supply (no GST) instead of a tax invoice, automatically.
Where does the invoice amount come from?
From the completed job's costing — the proforma and the final invoice both build from the same figures, so the estimate and the bill never disagree.