Supplier Book
All your vendors in one place — saved once, reused by every Setu tool.
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What is a supplier book (vendor register)?
A supplier book, or vendor register, is the master list of everyone you buy from: their phone, email, billing address, GSTIN and anything you have agreed with them. It holds no bills or amounts. It is the reference that your purchase entries, orders and payments draw on. When the details live in one place, you stop typing the same supplier's name three different ways, purchase bills match the right vendor, and a new staff member can call the right person for a re-order without searching old WhatsApp chats.
For a GST-registered business, the supplier's GSTIN is the field that matters most. Input tax credit on a purchase reaches you only when the supplier reports that invoice against your GSTIN, after which it shows up in your GSTR-2B. Keeping each supplier's correct GSTIN on file makes the monthly match of purchase bills against GSTR-2B quicker and helps you spot the supplier who has not filed. The first two digits of a GSTIN are the state code. If a supplier's code differs from yours, their bills will usually carry IGST rather than CGST plus SGST.
What the supplier book keeps for you
Complete vendor record
Store the name, phone, email, GSTIN, address and free-text notes for each supplier on one card.
Quick search
Find a supplier by typing part of the name or phone number. The list stays sorted from A to Z.
Edit any time
Update a changed phone number or new address in place, and tools that pick from the book use the new details from then on.
Fills purchase documents
The Purchase Order and Debit Note generators can fill a supplier's name, address and GSTIN straight from the book.
Links to expenses and vendor scoring
Tag expenses to a supplier in the Expense Tracker, and load your suppliers into Vendor Comparison to score them on price, quality and delivery.
Works on a phone
On a small screen the supplier list and the form stack in one column, so you can add a supplier from the counter.
How to use the free supplier book
- 1In the Add supplier form, type the supplier's name. It is the only required field.
- 2Add the phone number, email, GSTIN and address, and use Notes for credit terms, the contact person or bank details.
- 3Tap Add supplier. The supplier joins the list, sorted alphabetically.
- 4Use the search box to find a supplier by part of their name or phone number.
- 5Tap Edit to update a supplier's details and Save changes, or Delete to remove a supplier you no longer buy from.
- 6In the Purchase Order Generator or Debit Note Generator, tap Use workspace on the banner if it appears, then pick the supplier to fill in their name, address and GSTIN.
Check a supplier's GSTIN before you save it
One wrong character in a GSTIN means that supplier's bills will not match the entries in your GSTR-2B when you reconcile, and you can lose time chasing a credit or miss one that is actually there. Use the Search Taxpayer option on the GST portal to confirm the number is active and the legal name matches the bill. The same search shows whether the supplier is under the composition scheme. Composition dealers cannot charge GST on their bills, so there is no input tax credit to claim on those purchases. Write what you find in the supplier's notes so the next person does not have to check again.
Related tools for purchasing
Frequently asked questions
In your browser on your device, inside your Setu business workspace. Nothing is uploaded — no signup, no cloud.
The Purchase Register picks suppliers straight from this book, so you never retype vendor details when recording a purchase bill.
Yes — export the whole book as a CSV that opens in Excel or Google Sheets, any time.
At minimum, the business name as it appears on their bills, a phone number and their GSTIN if they are registered. Add the billing address for purchase orders and debit notes, and use the notes field for credit terms, the contact person's name, bank account or UPI ID for payments, and the items you usually buy from them. Only the name is required.
No. The GSTIN field accepts whatever you type and does not check the format or look the number up. Confirm it on the GST portal's Search Taxpayer page before saving. A valid GSTIN has 15 characters: a two-digit state code, the supplier's 10-character PAN, an entity number, a 14th character that is usually Z, and a final check character.
The supplier book is your list of vendors and their details, and it changes only when a supplier's details change. The purchase register records each bill you receive, with the date, supplier, bill number, items, total and payment mode. You set up a supplier once in the book, then record many purchases against them in the register.
There is no import option; suppliers are added one at a time through the form. If you are moving from a spreadsheet, start with the suppliers you buy from most often, since a handful usually account for most of your purchase bills, and add the rest as their next bills arrive.