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OPM Billing

Billing without the busywork.

Send GST-ready invoices, collect by UPI, bill subscriptions on schedule and always know who owes what. Calm, accurate billing for growing Indian businesses.

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Set up in minutes. Your first invoice can go out today.

  • GST-ready invoicesHSN/SAC, tax breakup, IRN and e-way bills

  • UPI on every invoiceQR for the exact amount, plus payment links

  • Recurring billingPlans, renewals and metered usage

  • Approvals and auditRoles, rules and a full change history

Invoice designer

Invoices that look like your business.

Your logo, your colours and exactly the details your customers need. Nothing to design from scratch.

  • Logo and brand colourChecked for contrast so totals stay readable.

  • Four layoutsGST standard, Corporate, Professional or Minimal.

  • Tax detailsHSN/SAC codes and CGST, SGST or IGST lines.

  • Terms, notes and signatureDefaults you can change per invoice.

  • Bank details and UPI QRCustomers pay the exact amount.

  • Numbering and due datesYour prefix and payment terms, applied automatically.

From quote to cash

One calm flow for every rupee you bill.

Each step hands over to the next, so nothing is typed twice and nothing slips.

  1. Quote

    Send a quote, and turn it into an invoice once it is accepted.

  2. Invoice

    GST-ready, on your template, numbered for you.

  3. Send

    By email or WhatsApp, with a payment link attached.

  4. Remind

    Polite reminders before and after the due date.

  5. Collect

    UPI, links or bank transfer, allocated to invoices.

  6. Report

    Receivables, revenue and GST summaries, always current.

Getting paid

Spend your evenings on the business, not on chasing payments.

Reminders go out on schedule, payments land against the right invoice, and the dashboard shows what is due this week. The follow-up happens without you.

  • Automatic reminders by email and WhatsApp
  • Payments allocated to one or many invoices
  • Receivables ageing at a glance
Business owner reviewing invoices on a laptop

Recurring billing

Subscriptions and retainers that bill themselves.

Put a customer on a plan once. OPM Billing raises the invoice every cycle, handles upgrades and cancellations, and bills metered usage when you charge by volume.

  • Monthly, quarterly and yearly cycles
  • Usage-based billing for metered plans
  • Recurring invoices on your schedule
Explore recurring billing
Subscriptions with plans, billing cycles and next invoice dates

GST, handled

Ready for filing day, every month.

Every invoice feeds your GST summaries. Generate IRNs for B2B invoices, raise e-way bills for goods, and see what needs fixing before you file.

  • GSTR-1 and GSTR-3B summaries
  • E-invoicing with IRN generation
  • HSN/SAC summary and e-way bills
See GST features
Finance executive checking outstanding payments

Inside OPM Billing

See where your money is, in one place.

Today, at a glance

What was billed, what was collected and what needs your attention, the moment you sign in.

  • Overdue invoices and failed payments
  • Collections this month
  • Your own work queue
OPM Billing dashboard with receivables, collections and invoices that need attention

Made for the people who bill

Simple enough for the owner. Controlled enough for finance.

  • Studio owner checking which invoices have been paid

    Business owners

    Raise an invoice from your phone or laptop and see who has paid without asking anyone.

    See how
  • Accounts assistant preparing the month's invoices

    Accounts teams

    Batch the month’s invoices, match payments and hand clean numbers to your accountant.

    See how
  • Customer paying an invoice from a phone

    Your customers

    A clear invoice, a UPI code that fills in the amount, and a portal for their statements.

    See how

Trust and control

Built like a finance tool, because it is one.

Money data needs clear permissions and a clear record. OPM Billing has both.

  • Roles and permissions

    Decide who can create, approve, send or void, down to individual actions.

  • Approval rules

    Route invoices, discounts and credit notes above a limit for approval before they go out.

  • Audit log

    Every change is recorded with who made it and when, ready for your auditor.

  • Automations

    Rules that send reminders, notify owners or flag overdue accounts for you.

  • Secure sessions

    Sign-in tokens stay on the server in secure cookies and never reach the browser.

  • Customer portal

    Customers see their own invoices and statements, and nothing else.

Part of OPM Technologies

Billing works better with the rest of your operations.

OPM products share one company account and one sign-in. Connections between them are rolling out product by product.

  • Planned

    Quote to revenue

    Turn a won deal in OPM CRM into a customer and invoice in Billing.

    Explore CRM
  • Planned

    Books that match

    Send invoices and payments to Finpilot for accounting and reconciliation.

    Explore Finpilot
  • Planned

    Orders and sign-ups

    Collect order or registration details with Airform before you bill.

    Explore Airform

Questions

Good to know

Are the invoices GST compliant?

Yes. Invoices carry your GSTIN, HSN/SAC codes and the CGST and SGST (or IGST) breakup, and OPM Billing prepares the GSTR-1 and GSTR-3B summaries from them. B2B invoices can get an IRN through e-invoicing, and e-way bills can be raised for goods in transit.

Can I make the invoice look like my brand?

Yes. Choose from four layouts, add your logo and brand colour, pick which sections appear (HSN/SAC, tax breakup, UPI QR, signature, bank details) and set default notes, terms and payment terms.

How do customers pay?

Every invoice can carry a UPI QR code for the exact amount, and you can send a payment link. Payments you receive are allocated to invoices, so receivables stay accurate.

Does it handle subscriptions and recurring invoices?

Yes. Create plans, put customers on monthly, quarterly or yearly cycles, and bill metered usage. Recurring invoices are raised on schedule.

Can my team use it with the right permissions?

Yes. Invite your team, give each person a role, and add approval rules for invoices, credit notes or discounts above a limit. Every change is recorded in the audit log.

How much does it cost?

Plans are priced per organisation, per month. Pricing is shared on request while public prices are finalised. Talk to us and we will recommend the right plan.

Pricing Plans are priced per organisation, per month. Compare plans

Send your next invoice with OPM Billing.

Create your account, add your GSTIN and logo, and you are ready to bill.

Get startedTalk to us