Goods and services on one invoice
Parts carry their HSN code and rate; labour carries its SAC code and rate. The invoice totals each block separately and shows a combined tax summary.
GST & billing
GST Invoicing Built Around Repair Work
Compliant invoices without a separate accounting package.
Repair billing is awkward under GST because a single invoice usually mixes goods and services — a display at one rate, labour at another, sometimes a device sold outright at a third. PhoneMistri handles the split on the invoice itself, so the counter staff never has to reason about tax rates.
Automatic CGST/SGST vs IGST
Intra-state invoices split into CGST and SGST; inter-state invoices use IGST. The decision follows the customer's state, not a manual toggle.
B2B invoices with customer GSTIN
Capture the buyer's GSTIN on the customer record once and every subsequent invoice carries it — which is what makes the transaction claimable for your corporate clients.
Exports your accountant accepts
Period-wise sales registers export in a GSTR-1 friendly layout, so filing does not mean re-keying a month of counter slips.
The mixed-supply problem in repair billing
A screen replacement is a supply of goods and a supply of services in the same transaction. Handled casually — everything billed at the labour rate, or everything at the parts rate — it produces invoices that are wrong in a way that only surfaces during a scrutiny notice.
PhoneMistri keeps the two blocks distinct on the document. The customer sees one total, and the tax summary underneath shows the taxable value and tax amount at each rate. That is the format your accountant needs and the one a departmental officer expects.
Invoice numbering that holds up
GST requires a consecutive series with no gaps. Shops that bill from a mix of a paper book, a spreadsheet and a phone gallery inevitably produce duplicates and holes.
Numbering here is issued by the system per branch and per financial year. A cancelled invoice becomes a credit note rather than a deleted number, so the series stays intact and the reversal is documented.
What about shops below the registration threshold?
Not every counter is registered. GST features are switched off per shop, and unregistered shops bill on a plain estimate/receipt format with no tax columns and no GSTIN block.
The same applies outside India — shops in the UAE bill under VAT with the relevant TRN field instead, and shops billing in USD get a plain sales invoice.
Estimates are not invoices
A quote given at intake is not a taxable supply, and issuing it on an invoice number burns a number in your series for work that may never happen. When the customer declines, you are left with a gap you have to explain.
Keep estimates on their own document with their own numbering, and convert to an invoice only when the work is approved and done. The estimate stays attached to the ticket as the record of what was quoted.
This also gives you a conversion figure worth watching — quoted versus accepted, by repair type. A category converting far below the rest is usually priced wrong rather than unwanted.
Getting the paperwork right before you need it
The moment to discover your invoice format is non-compliant is not during a departmental visit. The elements that matter are unglamorous: your GSTIN and address, the customer's GSTIN on B2B supplies, place of supply, HSN or SAC per line, rate-wise taxable value and tax, and a consecutive number.
Shops that get pulled up are rarely evading anything. They are typically billing from three different places with inconsistent formats, and cannot produce a coherent set of records for a period.
Billing everything through one system solves the reconstruction problem more than the compliance problem — but the reconstruction problem is the one that actually costs you time.
Where PhoneMistri helps during the day
The product is built around the points where repair teams usually lose time: intake, handovers, parts, approvals, QC, payments, and customer updates.
HSN codes stored per part, SAC codes per service
Rate-wise tax summary printed on every invoice
Inclusive or exclusive pricing, set per shop
Credit notes for returns and warranty reversals
Sequential, gap-free invoice numbering per financial year
A4 and thermal invoice formats
Related pages
Frequently asked questions
Does it file GST returns for me?
No — PhoneMistri produces the sales register and invoice data your accountant or filing portal needs. It is not a filing utility, and it does not replace your CA.
Can I bill a device sale and a repair on the same invoice?
Yes. Trade-in devices, accessories and repair services can appear on one document, each with its own HSN/SAC and rate.
How are warranty repairs billed?
As zero-value service lines against the original invoice, so the parts consumption is recorded and stock is deducted without charging the customer again.
Can I change the tax rate on a single line?
Yes, with the rate stored against the part or service so it defaults correctly next time rather than needing a manual override on every invoice.
Is e-invoicing supported?
E-invoicing applies above a turnover threshold most independent repair shops sit below. If your turnover crosses it, talk to us before switching — we will tell you honestly whether we are the right fit.
Start with a repair workflow built for growth
Track every device, manage inventory, serve teams in their preferred language, and connect repair work with online sales in one place.