Business Tools
Invoice Generator
Create professional invoices online for free. Free invoice maker with templates. Generate invoices instantly for your business.
Use Invoice Generator to get instant results without uploads or sign-ups. Everything runs securely in your browser for fast, reliable output.
Your results will appear here.
About this tool
Our Invoice Generator Calculator helps you create professional invoices by calculating totals, taxes, and providing specifications for invoice documents.
Invoices are essential business documents for billing clients, tracking payments, and maintaining financial records.
This tool helps you calculate invoice amounts, apply taxes and discounts, and generate professional invoices ready for download.
Usage examples
Service Invoice
Create invoice for consulting services
Input: 10 hours × $100/hr + 10% tax → Output: $1,100.00 total
Product Invoice
Generate invoice for product sales
Input: 5 items × $50 each - 5% discount + tax → Output: $248.06 total
How to use
- Enter invoice details (items, quantities, prices)
- Add client and business information
- Select invoice template style
- Calculate totals with tax and discounts
- View invoice specifications
Benefits
- Create professional invoices
- Calculate totals automatically
- Apply taxes and discounts
- Multiple currency support
- Customizable templates
- Instant PDF generation
- Track payment status
FAQs
What should be included in an invoice?
Essential elements: invoice number, date, seller and buyer details, itemized list, quantities, prices, subtotal, taxes, total amount, payment terms, and due date.
How do I calculate invoice tax?
Tax is calculated on the subtotal after discounts. Formula: (Subtotal - Discount) × Tax Rate = Tax Amount. Add to subtotal for final total.
When should I send an invoice?
Send invoices immediately after completing work or delivering products. Include payment terms (e.g., Net 30) and due date.
What payment terms should I offer?
Common terms: Net 30 (payment due in 30 days), Net 15 (15 days), Due on Receipt (immediate), or 2/10 Net 30 (2% discount if paid within 10 days). Choose based on cash flow needs and industry standards. Shorter terms improve cash flow but may reduce competitiveness.
How can I encourage faster payment?
Offer early payment discounts (e.g., 2-5% off for payment within 10 days), accept multiple payment methods (credit cards, ACH, PayPal), send reminders before due date, make invoices easy to understand, and consider requiring deposits for large projects. Clear payment instructions and professional invoices also speed up payment.
Should I charge late fees on overdue invoices?
Yes, late fees encourage timely payment. Common rates: 1-2% per month or $25-50 flat fee. Must be stated clearly on invoice before services rendered. Check local laws for maximum allowable rates. Many businesses waive first-time late fees to maintain relationships but enforce for repeat offenders.
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