Basic Accounting & Tax for Complete Beginners
A jargon-free overview of how your invoices tie into your accounting and taxes.
Why You Should Care About Accounting

When you start generating invoices, you step into the world of business accounting. If you ignore it until tax season, you'll be stressed and scrambled.
Here is a simple, no-nonsense breakdown of what you need to know about the invoices you create.
Income vs. Cash Flow
- Income (Revenue): The total amount you billed out on your invoices.
- Cash Flow: The actual cash hitting your bank account.
Why it matters: You might have $10,000 in generated invoices, but if clients haven't paid, your cash flow is zero. This is why tracking Accounts Receivable (money owed to you) is just as important as generating the invoice.
Net vs. Gross
When a client asks for your rate, they usually mean your Gross rate (before taxes and expenses). Always remember that an invoice paid for $1,000 does not mean you have $1,000 to spend. You must set aside a percentage of every paid invoice for taxes.
Deductions and Expenses
To lower your tax burden, you can deduct the costs of running your business from your income. If you buy software, a laptop, or pay for web hosting to do your work, keep the receipts. Your profit is calculated as: Total Invoiced Income - Total Business Expenses = Taxable Profit.
Sales Tax / VAT / GST
Depending on your country and state, you might be required by law to charge tax on your invoices.
- If you need to charge tax, our Invoice Generator handles the math for you. Just click the "Tax" toggle and input your local percentage rate.
- Remember: The tax money you collect on an invoice is not your money. You are holding it temporarily until you remit it to the government.
Best Practices
- Separate your bank accounts: Never mix personal and business money. Clients should pay invoices into a dedicated business account.
- Save your PDFs: Always keep a digital copy of every generated invoice for at least 3-7 years (depending on your local tax laws).
Invoice Generator Guide