Free Business Guides
Practical, no-fluff guides to help you invoice smarter, launch your business, go freelance, and grow. Written by the PrestoKit team.
How to Create a Professional Invoice
Everything you need to know about creating invoices that get you paid on time. Covers essential elements, best practices, and common mistakes.
How to Start a Small Business — Complete Guide
A step-by-step walkthrough of launching your business, from choosing an idea to registering your LLC and landing your first customers.
Freelancing 101 — Getting Started as a Freelancer
Your comprehensive guide to building a freelance career. Learn how to find clients, set rates, manage projects, and handle taxes.
QR Codes — The Complete Guide
Everything you need to know about QR codes: how they work, business use cases, design best practices, and printing guidelines.
How to Calculate Compound Interest
Understand the compound interest formula, walk through real examples, and learn how to maximize your savings and investment growth.
How to Write a Privacy Policy
Step-by-step guide to writing a privacy policy that complies with GDPR, CCPA, and other regulations. Protect your business and build user trust.
How to Calculate Your Paycheck After Taxes
Break down every deduction between your gross pay and take-home pay. Covers federal tax, FICA, state tax, and common payroll deductions.
How to File Taxes as a Freelancer
Everything freelancers need to know: quarterly estimated payments, Schedule C, self-employment tax, and deductions that save you money.
How to Create a Professional Business Card
Design a business card that makes a lasting impression. Covers layout, typography, essential information, and printing tips.
How to Calculate a Loan Payment
Learn the monthly payment formula, understand amortization, and calculate the true cost of any mortgage, auto loan, or personal loan.
How to Write a Business Plan
A complete guide to writing a business plan that works — executive summary, market analysis, financial projections, and a one-page template.
How to Set Your Freelance Rate
Use the bare-minimum formula and target income method to price yourself right. Includes rate ranges by category and a raise negotiation script.
How to Register an LLC
Step-by-step guide to forming an LLC in any US state — articles of organization, EIN, operating agreement, and filing costs by state.
How to Track Business Expenses
Set up a simple expense tracking system, learn which costs are deductible, and avoid the most common bookkeeping mistakes.
How to Negotiate Your Salary
Word-for-word scripts, the three-number framework, and proven strategies to negotiate higher pay — both for new jobs and raises.
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