Singapore SME Compliance

Singapore SME Compliance Assistant

Help Singapore SMEs automate compliance tasks: GST calculation, PEPPOL invoice validation, tax report generation, and regulatory checklist.

Quick Start

Check GST registration requirements:

# Check if business needs GST registration (threshold: S$1M annual turnover)
curl -s "https://www.iras.gov.sg/api/gst-threshold-check" -d '{"turnover": 1000000}'

GST calculation:

# Calculate GST (9% as of 2024)
curl -s "https://api.gstcalculator.sg/calculate" -d '{"amount": 1000, "rate": 0.09}'
Returns: {amount: 1000, gst: 90, total: 1090}

Key Features

1. GST Registration Checker

Singapore businesses must register for GST if:

Usage:

# Check registration requirement
echo "Check GST registration for turnover: S$1,200,000"

2. GST Calculator

Current GST rates:

Calculate GST:

# For invoice amount
Invoice: S$5,000
GST (9%): S$450
Total: S$5,450

3. PEPPOL Invoice Validator

Singapore uses PEPPOL (InvoiceNow) for e-invoicing.

Validate PEPPOL invoice: 1. Check UEN format (9 or 10 characters) 2. Verify invoice structure (UBL 2.1 format) 3. Validate against IRAS requirements

Checklist:

4. Monthly GST Return (GST F5) Helper

Required data for GST F5:

Monthly checklist:

□ Collect all tax invoices (purchases)
□ Collect all tax invoices (sales)
□ Calculate output tax (sales)
□ Calculate input tax (purchases)
□ Reconcile with accounting records
□ File GST F5 by deadline (1 month after period end)

5. Compliance Calendar

Key deadlines: | Deadline | Requirement | |----------|-------------| | Monthly (if on monthly filing) | GST F5 return | | Quarterly (default) | GST F5 return (within 1 month after quarter end) | | Annually | Estimated Chargeable Income (ECI) - within 3 months after FYE | | Annually | Corporate Tax Return (Form C-S/C) - by Nov 30 |

Reminders:

Common Compliance Scenarios

Scenario 1: New Business Registration

Steps: 1. Register business with ACRA 2. Get UEN (Unique Entity Number) 3. Check if GST registration required 4. Set up accounting system 5. Register for CorpPass (for digital services)

Scenario 2: Importing Goods

Requirements:

Scenario 3: Exporting Goods

Requirements:

IRAS Resources

Penalty Information

Late GST Filing:

Incorrect Information:

Automation Workflows

Monthly GST Preparation (Automated)

Day 1 of new month: 1. Fetch all sales invoices from previous month 2. Calculate total output tax 3. Fetch all purchase invoices 4. Calculate total input tax 5. Generate GST F5 draft 6. Send reminder to accountant

Commands:

# Generate monthly GST summary
echo "Generate GST report for $(date -d 'last month' '+%Y-%m')"
Calculate totals
Output Tax: Sum of GST on all sales invoices
Input Tax: Sum of GST on all purchase invoices
Net GST: Output - Input

Quarterly Compliance Check

End of each quarter: 1. Review all transactions 2. Verify GST calculations 3. Check PEPPOL compliance 4. Update compliance calendar 5. Prepare for GST F5 filing

Integration Examples

With Accounting Software

Xero/QuickBooks integration:

# Export sales data
curl -s "https://api.xero.com/api/Invoices?status=PAID" \
  -H "Authorization: Bearer TOKEN"
Export purchase data
curl -s "https://api.xero.com/api/Bills?status=PAID" \
  -H "Authorization: Bearer TOKEN"

With IRAS MyTax Portal

File GST F5 via API:

# Submit GST return (requires CorpPass authentication)
curl -s "https://apiservices.iras.gov.sg/gst/f5" \
  -X POST \
  -H "Authorization: Bearer CORPPASS_TOKEN" \
  -d '{"period": "202403", "box1": 100000, "box4": 9000, ...}'

Error Handling

Common Errors

"GST registration required"

"PEPPOL invoice rejected"

"Late filing penalty"

Best Practices

1. Keep digital records - IRAS accepts digital records 2. Reconcile monthly - Don't wait until quarter end 3. Use accounting software - Xero, QuickBooks, SQL Accounting 4. Set up auto-reminders - Never miss a deadline 5. Review input tax claims - Ensure all claims are valid 6. Keep export documentation - For zero-rated supplies 7. Train staff - On GST requirements and PEPPOL

Support Resources

Updates

Check GST registration requirements:

# Check if business needs GST registration (threshold: S$1M annual turnover)
curl -s "https://www.iras.gov.sg/api/gst-threshold-check" -d '{"turnover": 1000000}'

GST calculation:

# Calculate GST (9% as of 2024)
curl -s "https://api.gstcalculator.sg/calculate" -d '{"amount": 1000, "rate": 0.09}'
Returns: {amount: 1000, gst: 90, total: 1090}

1. Keep digital records - IRAS accepts digital records 2. Reconcile monthly - Don't wait until quarter end 3. Use accounting software - Xero, QuickBooks, SQL Accounting 4. Set up auto-reminders - Never miss a deadline 5. Review input tax claims - Ensure all claims are valid 6. Keep export documentation - For zero-rated supplies 7. Train staff - On GST requirements and PEPPOL