Personal Cash Flow Forecasting: Will I Have Enough Money Next Month?

Most of us know how much money we have today. The question that keeps you up at night is different: how much will I have left at the end of the month — after the annual insurance, the tax advance, the holiday I already booked? Most people find out too late, when the account is already in the red.

A cash flow forecast is how you answer that question in advance. This article shows you how to build one, without a complicated spreadsheet.

What is a cash flow forecast?

Cash flow is simply the movement of money — what comes in, what goes out, and when. A forecast takes that forward in time: instead of looking only at your current balance, you look at your future balance at every point — next week, next month, six months out.

That difference is everything. A current balance of ₪8,000 looks great — until you remember a ₪6,000 insurance direct debit is coming in two weeks. A forecast shows you that before it happens.

Why this matters most for the self-employed and variable earners

For salaried people with a fixed paycheck, it's less dramatic. But if your income changes month to month — self-employed, freelancers, business owners — your current balance lies to you constantly. A good month looks like wealth; a weak month arrives by surprise. A forecast smooths that out: you see the real average and the risky moments ahead of time.

How to build a forecast — the three-step method

1. List your expected income. Not just this month's paycheck — everything you expect to receive in the coming months: client payments, tax refunds, bonuses.
2. List your fixed and one-off expenses. Recurring charges (rent, insurance, subscriptions) are easy because they repeat. Don't forget the one-offs — those are what catch people unprepared: annual insurance, arnona, tax advances, holidays, car servicing.
3. Run the balance forward. Take today's balance, add each future income and subtract each future expense on its date. The result: your projected balance for every day ahead. Now you can see if and when you're heading toward zero.

The most common mistake: planning only this month

Most people who try to plan look one month ahead — and miss exactly the big expenses that come once or twice a year. The annual insurance, the tax advance, the holiday: they're only "surprises" because nobody looked far enough out. A good forecast looks six months to a year ahead, including those distant large expenses.

The easy way to do this

You can build all of this in a spreadsheet — but it's fragile, goes stale fast, and most people abandon it after two months. That's why we built TinyCashflow: you enter your income and expenses (including ones that repeat automatically), and the app draws your future balance on a timeline — scroll forward and see exactly how much money you'll have at any point.

It works without connecting your bank account (how?), across multiple currencies, and offline. And if you're self-employed, you can tag deductible expenses as you go — so you don't overpay tax at year-end.

Frequently asked questions

What's the difference between a budget and a cash flow forecast?

A budget says how much you're allowed to spend per category. A cash flow forecast shows how much money you'll actually have at each point in time. They complement each other.

How far ahead should I plan?

At least six months, ideally a year — so you catch the big expenses that come once a year.

Do I need to connect my bank for a forecast?

No. A forecast is based on what you expect to happen, not just the past. You can build it manually — and that's often more accurate about the future.

This is general information for educational purposes only and is not financial advice.