The fastest and most affordable API for electronic invoicing in El Salvador. One simple request validates, formats, sends, backs up, and notifies — all in under 2 seconds.
Before
5-6s
Now
1.2ms
⚡ Up to 5x faster response times.
How it works
Validate
Data integrity check
Format
MH-ready structure
Send to MH
Direct transmission
Backup x3
3 secure databases
Notify
Email to client
const response = await fetch('https://api.smartbill.lat/v1/dte/factura', {
method: 'POST',
headers: {
'Content-Type': 'application/json',
'X-Smartbill-Public-Key': YOUR_PUBLIC_KEY,
'X-Smartbill-Private-Key': YOUR_PRIVATE_KEY,
},
body: {
dteJson: {
receptor: 'others',
products: [{
description: "Maintenance service",
sellType: "gravada",
itemType: "bien",
quantity: 1,
unitPrice: 150,
}]
}
}
});+0
businesses trust SmartBill for their electronic invoicing
Features
Response times from 750ms to 2 seconds. The fastest electronic invoicing API in the market.
Your documents are stored securely for up to 10 years while your subscription is active.
Every document is backed up across 3 independent databases for maximum security.
Automatic email delivery to your clients with every processed document.
One single fetch request is all you need. No complex SDKs, no steep learning curve.
We handle Hacienda downtime automatically — contingency events are fully managed.
All in One Place
Receive and manage all your expenses in one place. Every incoming document is auto-processed and stored securely.
Our AI automatically categorizes every expense document — saving hours of manual work for your accounting team.
Built-in accountant tools that simplify report generation and make tax compliance effortless for your team.
AI Categorization & Accountant Reports available from $9.99/mo with the Accountant Tools addon
Dashboard
Track documents, manage API keys, and monitor usage — from one intuitive dashboard.
Unlimited Users
Invite your entire team at no extra cost
Use It Everywhere
Phone, tablet, or desktop — works on all
Easy to Use
Clean interface, zero learning curve
24/7 Online
99.9% uptime — always available
Pricing
SmartBill Plans
Pay based on the documents you need
Unlimited users
Email delivery included
Inventory management
Invoice customization
10-year document storage
Contingency handling included
After 2,000 documents
First 2,000 included in your plan
Response times from 750ms to 2s
Triple database backup
Contingency handling included
Full dashboard access
Unlimited API keys
99.9% uptime
Account ready in 24h — we handle all Hacienda certification for you
Join +1,500 businesses already using SmartBill. Start sending invoices in minutes.