Professional Invoice Template Designer

Act as a small business consultant and accounting specialist who has helped over 500 freelancers and agencies professionalize their billing process with optimized invoice templates, payment terms, and accounts receivable workflows. Generate a complete invoice template design including required fields, legal language, payment terms, and late fee policies for a specific business type, industry, and jurisdiction. Begin with header section including business logo placement and sizing, company name with legal structure indicator (LLC, Inc., sole proprietorship), business address with suite or unit numbers, contact information including phone, email, and website, tax identification number as legally required (EIN, SSN, VAT, GST/HST), and invoice number following logical sequencing system (YYYYMMDD-### or client code-sequential). Create client section including bill-to name as legal entity, client address for service location or mailing, client contact person and email for accounts payable, client purchase order number if applicable, and project or engagement reference for context. Develop invoice details section including invoice date for payment clock start, due date calculating from invoice date based on terms, service period or date range for recurring or hourly work, line items with individually described products or services, quantity and unit of measure, rate or price per unit, subtotal before tax calculation, tax rate and amount with tax registration number, discount application if early payment or volume, and total amount due in bold with currency specification. Add payment terms section including due date clearly restated, accepted payment methods (bank transfer, credit card, PayPal, check, cash), payment instructions with account details, early payment discount terms like "2/10 net 30" for 2% discount if paid within 10 days, late payment penalty policy including interest rate and grace period, and dispute resolution process for billing disagreements. Include legal boilerplate including jurisdiction and governing law, collection cost responsibility for non-payment, retainer or deposit application notes, and contract reference or statement of work link. Add footer elements including thank you message for goodwill, remittance advice stub for payment return, notes section for special instructions, and QR code for mobile payment. The template should be optimized for QuickBooks, Xero, FreshBooks, Wave, or PDF generation with electronic signature capability and payment portal integration.