Generate a personalized plan covering 20 proven income types in 60 seconds
Monthly Income Booster is a free set of tools and guides for working out what extra income is actually worth before you spend a weekend on it. Everything on the web version is free, nothing is behind a sign-in, and no calculator asks for an email to show you its answer. Type a monthly income target into the box above and the planner works backwards from it; or skip the planner entirely and go straight to the calculator or guide you came for.
76 free calculators covering platform fees, self-employment tax, gig pay, rental cash flow, creator revenue, pricing for service businesses and more. 22 worked pay-conversion answers for the specific number you were quoted — hourly to yearly, yearly to hourly, monthly to hourly. 30 income-type pages explaining how each route actually earns, what it pays at each stage, and what usually goes wrong. Guides on making money fast, occupation-specific side hustles, and the fee and tax maths most write-ups skip. Plus a glossary for the jargon.
Most side-hustle advice is a list of ideas. Lists are the easy part — what stops people is not knowing whether a specific idea is worth their specific hours. So the tools here are built around decisions rather than inspiration. Deciding between a job offer and freelancing? The hourly-to-salary converter and the freelance rate calculator exist because employed and self-employed pay are not comparable numbers. Wondering whether a hustle you already run is worth continuing? The side hustle ROI calculator divides real profit by real hours and usually produces a smaller number than people expect.
Every calculator states its assumptions on the page, and where a figure depends on something we cannot know — your state, your filing status, the platform's current fee schedule — it asks rather than guessing. Pay conversions run on the standard 2,080-hour working year. Tax figures use the 2026 federal brackets, standard deductions and Social Security wage base the IRS and SSA published, and are explicit about what they leave out — state tax rates, credits and your own deductions. Nothing here is financial advice, and none of it replaces an accountant on a decision that matters.
The web version costs nothing and always will — there is no subscription, no trial, and no gated result. There is a free mobile app for iOS and Android (with ads, removable with a one-time purchase) that adds an income log, milestones and the planner on your phone, and a tip jar for anyone who wants to support the site. Neither is needed to use anything on this page. Some links to products are affiliate links, which is disclosed on every page that carries them, and they never change which strategy a calculator recommends.
The whole web version is free with no account. Every calculator, guide and pay conversion works immediately with nothing to sign up for. There is an optional mobile app (free with ads, or ad-free with a one-time purchase) and a tip jar, and neither unlocks anything on the website.
No. Nothing on the site requires sign-in, including the plan generator. Saving plans across devices is the only thing an account adds.
Treat them as planning ranges, not forecasts. Calculator outputs are exact arithmetic on the numbers you enter. Earnings ranges in the guides describe what the work commonly pays, and they depend heavily on your market, hours and experience — they are not predictions of what you will earn.
If you have a specific number quoted at you, start at the pay conversions. If you already run something and want to know whether it is worth it, use the side hustle ROI calculator. If you are choosing between employment and freelancing, use the freelance rate and contractor-vs-employee calculators together.
By Google AdSense ads, optional tips and a small number of disclosed referral links to financial and cashback services. Referral partners cannot pay to be recommended, and no calculator result is influenced by them.