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Onsello Invoice Platform

Powerful
Invoice Service & API
For Your Business

A comprehensive automated invoicing system. Seamlessly connect via standard APIs. Designed for businesses of all sizes, from startups to large enterprises.

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99.9%

Uptime SLA

<200ms

API Response Time

1M+

Invoices / Month

50+

Integrations

Customer ABC Company Ltd.

Subtotal ฿ 125,000.00

VAT 7% ฿ 8,750.00

Total ฿ 133,750.00

Sent Successfully

Processing 78%

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Deluxe Room (2 Nights) ฿ 4,800

Breakfast × 2 ฿ 600

Airport Transfer ฿ 800

VAT 7% ฿ 434

Total Amount ฿ 6,634

Auto
Invoice

Invoice Service

Smart Invoicing System
Tailored for Hospitality
Businesses

Onsello Invoice Service is a comprehensive financial document solution designed to meet the needs of hotels, resorts, and all types of accommodations—from small boutique stays to large hotel chains.

The system automatically generates invoices based on booking conditions, fully supports Value Added Tax (VAT), and issues documents that comply with standard tax department regulations.

Automated Invoice & Tax Receipt generation, supporting both VAT and Non-VAT.
Auto-email invoices to guests with instantly printable PDF attachments.
Seamless integration with your existing PMS and booking channels.
Multi-currency support and bilingual (Thai-English) documentation.

Automated Documents

Instantly generate invoices, tax invoices, and receipts upon booking or check-out. Drastically reduce administrative workload.

Auto-Generate

Seamless PMS Integration

Connect effortlessly with your existing Property Management System using our flexible, secure, and reliable RESTful APIs.

API Integration

Tax Compliant

Issue documents strictly following local Revenue Department standards. Fully supports VAT, Withholding Tax, and substitute documents.

TAX Compliance

Automated Email Delivery

The system automatically sends PDF invoices to guests via email right after check-out, alongside automated follow-ups for corporate clients.

Auto Email

Multi-Currency & Bilingual

Support generating invoices in multiple languages and seamlessly display different currencies depending on your specific requirements.

Multi-Currency

Dashboard & Reporting

Monitor all invoice statuses from a centralized dashboard. Export daily, monthly, and yearly revenue reports for accounting ease.

Reporting

WHY ONSELLO

Reduce Costs,
Boost Efficiency
for Your Business

Hotels and properties using Onsello Invoice Service significantly reduce paperwork time and eliminate manual errors, allowing teams to focus on what matters most.

80%

Less Paperwork Time

Calculation Errors

100%

Tax Standard Compliant

24/7

System Availability

Save Front Desk Time

Reduce repetitive manual tasks, allowing your team to focus more on guest care instead of processing paperwork.

Secure & Reliable

All financial data is securely encrypted and backed up daily, supporting industry security standards.

Highly Scalable

Whether you have 10 or 1,000 rooms, the system handles unlimited transaction volumes seamlessly.

Elevate Guest Experience

Guests receive accurate, professional invoices instantly, creating a lasting positive impression of your property.

Boutique Hotels & Resorts

Small to medium-sized properties needing a professional document system at an affordable price.

Business Hotels

Hotels catering to corporate clients, requiring accurate invoices and tax receipts separated by company.

Hotel Chains

Manage invoices across multiple branches from a single dashboard, with consolidated reports for central accounting.

Serviced Apartments

Long-term accommodations needing monthly invoices, supporting flexible billing cycle configurations.

Enterprise Invoice API

Automate Your Billing with Smart Invoice API

Streamline your financial operations with our robust Invoice Service. Generate, send, and manage professional invoices automatically, integrating seamlessly into your existing software and workflow.