Every Rackwave invoice follows a standard format. This article walks through each section of an invoice — from the header fields to line items, tax calculations, and payment terms — so you can reconcile invoices accurately and share them with your accounts team without confusion.
Invoice Header Section
| Field | Description | Example |
|---|---|---|
| Invoice Number | Unique sequential reference number for this invoice | INV-00047 |
| Invoice Date | Date the invoice was issued | 07 June 2026 |
| Due Date | Date by which payment must be received | 14 June 2026 |
| Billing Period | The subscription period this invoice covers | 01 June 2026 – 30 June 2026 |
| Bill To | Your company name, billing address, and GSTIN (if provided) | Vmayo Technologies, Jaipur, Rajasthan |
| Billed By | Rackwave company details, GST registration number, and contact information | Rackwave Technologies Pvt. Ltd. |
| Currency | Currency of the invoice — determined by your registered country | INR (₹) for India, USD ($) for international |
Line Items Section
The main body of the invoice lists each item being charged. Each line item contains:
| Column | What It Means | Example |
|---|---|---|
| # | Line item sequence number | 1 |
| Description | Name of the plan or service being billed | MigoSMTP — 30k Email SMTP Server (Monthly) |
| Qty | Quantity — typically 1 for subscription plans | 1 |
| Unit Price | Price per unit before tax | ₹1,017.00 |
| Tax % | Applicable tax rate for this line item | 18% GST |
| Tax Amount | Calculated tax on this line item | ₹183.06 |
| Total | Line item total including tax | ₹1,200.06 |
Common Line Item Types
| Line Item Type | When It Appears |
|---|---|
| Subscription — [Platform] [Plan Name] | Standard monthly or yearly renewal charge for your plan |
| Prorated Upgrade — [Old Plan] to [New Plan] | Charged when you upgrade mid-billing cycle; covers the difference for remaining days only |
| Prorated Credit — [Old Plan] | A negative line item (credit) for the unused days on your previous plan when upgrading |
| Add-on — [Feature Name] | Charge for any additional add-on features enabled on your subscription |
| Top-up Credit — [Platform] | Wallet balance top-up for usage-based billing (e.g. SMS credits, voice minutes) |
| Late Fee | Applied to accounts with invoices paid significantly past the due date (where applicable) |
Invoice Totals Section
| Field | Calculation |
|---|---|
| Sub Total | Sum of all line items before tax |
| Discount | Any promotional or loyalty discounts applied to the invoice |
| CGST (9%) | Central GST component — applies when both supplier and recipient are in the same state |
| SGST (9%) | State GST component — paired with CGST for intra-state transactions |
| IGST (18%) | Integrated GST — applies when supplier and recipient are in different states (or international) |
| Credit Applied | Any account credit or prorated credit deducted from this invoice |
| Total Due | Final amount payable — Sub Total + Tax − Discounts − Credits |
CGST + SGST vs IGST: If Rackwave and your business are both registered in the same Indian state, the invoice will show CGST (9%) + SGST (9%) = 18% total. If you are in a different state from Rackwave, or if you are an international customer, IGST (18%) is applied as a single line item instead.
Payment Terms Section
The bottom of every invoice includes:
- Payment terms — standard Net 7 (payment due within 7 days of invoice date).
- Payment methods accepted — bank transfer, UPI, credit/debit card.
- Bank account details — for customers paying via direct bank transfer or NEFT/RTGS.
- Notes — any special instructions or references to include with payment.
Amending an Invoice
Invoices cannot be edited after they are issued. If an invoice contains an error — such as incorrect company name, wrong GSTIN, or incorrect billing address — contact support immediately before paying. In most cases a credit note will be issued against the original invoice and a corrected invoice generated.
GST invoices: Under Indian GST law, invoices cannot be amended after they are filed in a GSTR return. Ensure your GSTIN and billing details are correct in your profile before your invoice is generated. Corrections after GST filing require a formal credit note and revised invoice process.