Accounting firms
The system was built for the office that issues NFS-e for many clients. Each provider has its own A1 certificate and numbering; the team issues, cancels, substitutes and sends on WhatsApp in the same flow.
National NFS-e issuance system · Emissor Nacional
Taking too long to issue the national invoice?
Built for accounting firms. A Brazilian NFS-e issuance system on the Emissor Nacional standard: your clients’ companies in one app, operators, a shared database and DANFSe on WhatsApp — no government portal forms.
Built for accounting firms
NFS-e issuance system on the Emissor Nacional standard. One program for every client company, with the team on the same database.
Teams that bill under more than one company
Group, holding or a provider with several companies: pick the tax ID at issue time and filter invoices by provider. Business plan: unlimited providers.
Anyone who wants to save time issuing
Register the client and service once. Next invoice: select, check the amount, issue and download the DANFSe. Portal rework disappears.
Advantages of the Emissor Nacional issuance system
Issue through Emissor Nacional
The NFS-e goes out through the national issuer API. No portal login on every invoice and no filling the same fields again.
Several companies in one desktop
One program, many providers. Each tax ID has its own certificate, DPS series and invoices — the office flow does not change per client.
Multiple operators
Admin, issue and read-only in the same office. Each operator sees only the linked providers, with an audit trail of who issued what.
Shared database
Several workstations on the same records with PostgreSQL or SQL Server. Clients, services and invoices live on the office server, not on a single PC.
Send the invoice on WhatsApp
After issuing, send the DANFSe to the client on WhatsApp from the invoice list — no manual export and attach.
Light and dark themes
Switch the theme in the menu. The preference stays on this computer, for whoever prefers a light or dark screen.
App screens
National NFS-e issuance system on the Emissor Nacional standard — the accounting-office flow: providers, clients, services, issue, WhatsApp and substitution.
Register several companies in one app. Each provider has its own A1 certificate, series and DPS numbering — the accounting-office flow.
Windows 10 or 11 (64-bit). Install once; later versions apply automatically when you open the app.
The trial starts on the first login and lasts 15 days. After that the app requires a MK3 license.
Ongoing use requires a Starter or Business license issued by MK3 Soluções Ltda.
Testimonials
It greatly improved our invoice issuing, simplifying the process and sending the invoice via WhatsApp.
Plans and pricing
Billed monthly by plan. The 15-day trial follows Starter limits.
Starter
R$ 59
per month
- 1 operator
- Up to 2 providers
- Light and dark themes
- Send invoice on WhatsApp
Business
R$ 189
per month
- Up to 5 operators
- Unlimited providers (multiple companies)
- Built for accounting offices
- Shared database and WhatsApp
Request the key at contato@mk3.tech. Upgrade from Starter to Business without reinstalling.
Automatic updates
After the first Setup install, the app checks this website on startup. If a new version exists, it downloads and reinstalls itself.