Invoice Guides
Practical, plain-English guides to invoicing for freelancers, contractors and small businesses — how to create an invoice, what to put on it, and how to get paid on time. Every guide pairs with our free invoice generator.
Invoicing basics
How to Create an Invoice
A step-by-step walkthrough of every part of a professional invoice — from your business details to the total due.
What Is an Invoice?
The definition in plain terms: what invoices are used for, what they contain, and how they differ from quotes, receipts and bills.
What Should an Invoice Include?
The complete checklist: essential fields, the details that speed up payment, and a 30-second pre-send check.
Invoice Statuses Explained
Draft, sent, viewed, partially paid, paid, overdue — the standard lifecycle and how to track it in a plain spreadsheet.
Getting paid
Invoice Payment Terms
Net 30, Net 15, due on receipt and deposits — what each term means and how to choose terms that get you paid faster.
Invoice Numbers
How to number invoices: the three systems that work, what your first number should be, and how to handle mistakes.
Invoice Email Templates
Copy-paste emails for sending invoices, friendly reminders and overdue follow-ups — with subject lines that work.
Invoice Late Fees
How late fees typically work, the agree-first rule, wording examples, and the alternatives that often work better.
How to Get Paid Faster
Nine tactics in the order they happen: deposits, shorter terms, same-day invoicing, the right inbox, and follow-ups that work.
Invoice Deposits
Typical deposit sizes, two clean ways to invoice one, copy-paste wording, and when not to ask for money upfront.
Deposit Invoice Generator
The tool, pre-filled: a deposit line with the percentage and base stated, and the balance computed on the final bill.
Overdue Invoices: What to Do
The calm follow-up sequence that collects: timing, tone, escalation — and how to prevent the next late payment.
Invoice Collection Letters
Three copy-paste letters in escalating firmness for 30, 45 and 60+ days overdue — professional from first line to last.
Recurring Invoices
Billing the same client every month: when the model fits, the five-minute monthly ritual, and the rules that keep it clean.
Retainer Invoices
Pay-for-access vs prepaid hours — example invoices for both retainer models, overage handling, and what to agree upfront.
Invoice types & comparisons
Invoice vs Receipt
One requests payment, the other proves it happened — a side-by-side comparison and when your business needs each.
Invoice vs Bill
Usually the same document seen from two sides of the table. Where the words drift apart, and what to send clients.
Invoice vs Estimate (and Quote)
Estimates propose, invoices collect. How the three documents fit together — and how one becomes the other.
What Is a Proforma Invoice?
The preview of the final bill: what proformas are for, how they differ from estimates and invoices, and how to make one.
Invoice calculators All calculators →
Due Date Calculator
Invoice date plus Net 7-90 or custom terms — the exact due date, computed in your browser.
Late Fee Calculator
Flat, one-time percent or monthly percent pro-rated by days overdue — the fee and the new total.
Early Payment Discount Calculator
2/10 Net 30 in plain numbers: both deadlines, the savings, and the annualized cost of skipping it.
For professionals
Freelancer Invoice Generator
Hourly, project and retainer invoicing for freelancers — with line-item examples by specialty and payment tips.
Contractor Invoice Generator
Labor and materials on separate lines, deposits with a balance due, and getting paid on contractor timelines.
Consultant Invoice Generator
Retainers, milestones and PO references — consulting invoices that enterprise accounts payable approves fast.
Photography Invoice Generator
Session fees, prints and second shooters itemized, deposits deducted — invoices that match the booking.
Graphic Design Invoice Generator
Project fees, revision rounds, rush and kill fees on clean lines — invoicing that mirrors your proposal.
Web Design Invoice Generator
Milestone billing, numbered change orders and care plans — invoice a website the way it's built.
Cleaning Invoice Generator
Per-visit or monthly billing, supplies and add-ons itemized — invoices for residential and commercial cleaning.
Landscaping Invoice Generator
Per-cut and seasonal billing, materials and crew labor on clean lines — from mowing runs to full installs.
Software Developer Invoice Generator
Hourly logs, sprints with ticket references, fixed-price features and support retainers — invoices that pass review.
Handyman Invoice Generator
Labor and parts on separate lines, service calls named, small jobs settled on the doorstep.
Plumbing Invoice Generator
Diagnostic fees, flat-rate jobs and emergency call-outs — invoices priced the way the trade prices work.
Electrician Invoice Generator
Hourly troubleshooting, flat-rate installs, permits and inspections visible, rough-in and finish phases.
HVAC Invoice Generator
Diagnostic fees, flat-rate repairs, refrigerant by the pound and maintenance plans that renew.
Painting Invoice Generator
Room and square-foot lines, prep work named, paint and materials visible — invoices that mirror the estimate.
Roofing Invoice Generator
Squares, tear-off and disposal, decking at an agreed unit price, and how insurance work changes the invoice.
Construction Invoice Generator
Progress draws against the schedule of values, retainage in the open, change orders numbered, prior payments deducted.
Auto Repair Invoice Generator
Book time with overlap, core charges, part condition, customer-pay vs warranty-pay, and RO details on the page.
Marketing Agency Invoice Generator
Who holds the ad account, the float you carry when you front media, at cost versus a stated markup, late platform credits and bonuses billed once the window closes.
More guides coming soon
Working in a trade we haven't covered yet? Tell us and we'll build your profession's page next. Meanwhile, the fastest way to get an invoice done is the generator itself.