Ten simple pieces about money

No jargon, and no “just spend less” advice. Each piece takes three minutes to read and ends with something you can do today. They’re written by FUNFIN — an app that works out how much of your money is free to spend today.

  1. 01Your card balance isn’t your money yetPart of that sum is already promised to someone. How to work out what’s left for you.
  2. 02How much you can spend todayOne number instead of ten rules. Takes a minute to work out.
  3. 03A rainy-day reserveHow much to set aside, where to keep it, and when you can touch it.
  4. 04Why counting by the month is a bad ideaIf you’re not paid on the first, the calendar is no help.
  5. 05Your loan: what you’re really paying forOne payment, but it goes to two different places.
  6. 06Which debt to pay off firstTwo methods. One is cheaper, the other feels better.
  7. 07Subscriptions cost more than they seem249 ₴ here, 199 ₴ there. Over a year it adds up to a sum that makes you wince.
  8. 08You paid for twoThat doesn’t mean you spent twice as much. How to record it honestly.
  9. 09The “wait a day” ruleThe cheapest way not to buy something you don’t need is to do nothing for 24 hours.
  10. 10How to start tracking and not quitYou don’t need bookkeeping. Seeing three things is enough.

Your card balance isn’t your money yet

There’s 38,420 ₴ on your card. Looks good. But 21,100 ₴ of it is already promised to your landlord and the bank, and you’ve set aside another 9,000 ₴ that you don’t plan to touch. Your actual money here is 8,320 ₴.

Your bank shows the sum sitting in the account right now. It doesn’t know that rent goes out on the 22nd, and a loan payment the same day. To the bank, it’s just money in an account. To you, it isn’t.

That creates an unpleasant trap. You look at your balance, see a big number and relax. A week later the money suddenly runs out. Nothing sudden actually happened: what was promised has finally been collected.

How to work out your own money

  1. Write down everything that will definitely leave your card before the next money arrives.
  2. Subtract it from your balance.
  3. Subtract the reserve you don’t touch.
Example for September 19
On the card38,420 ₴
Rent, September 22−12,000 ₴
Loan payment, September 22−9,100 ₴
Rainy-day reserve−9,000 ₴
Your money8,320 ₴

The number came out smaller and less pleasant. But it doesn’t lie. With a number like that you can plan a purchase calmly instead of guessing whether there’ll be enough.

FUNFIN does this subtraction for you every day and shows every line so you can check it.

Work out your money

How much you can spend today

Knowing how much of your money is really yours is half the job. The other half: how much of it you can spend today so that it lasts until the next money arrives.

It’s simple to work out. Take your money and divide it by the number of days left.

Today is September 19, your client pays on October 8
Your money8,320 ₴
Days ahead19
You can spend today437 ₴

Why this is easier than an ordinary budget by category: you don’t have to decide in advance how much goes to coffee, how much to transport and how much to gifts. One number answers the only question that actually comes up at the checkout: can I, or can’t I?

Two rules to make the number work

  • Round down. 437, not 438. Better to have a little left over than to come up short.
  • Don’t count money that isn’t there yet. If a client said “maybe I’ll pay on the 30th,” that “maybe” stays out of the number.

Spent more today? No big deal. Tomorrow’s number simply gets smaller on its own. It isn’t a punishment, just a plain consequence: there’s less money left, and fewer days too.

In FUNFIN this number sits on the home screen and updates after every purchase.

See your number

A rainy-day reserve

A reserve is money that sits there doing nothing. That is exactly its job. It isn’t there to earn anything; it’s there so you don’t have to borrow when your fridge breaks.

How much

It’s counted not as a percentage of your salary but in months of spending. Look at what you spend in an ordinary month. A reserve of three such months is good. Six is very good. You can start with one, which is already far better than nothing.

If an ordinary month costs 18,000 ₴
First goal, one month18,000 ₴
Good, three months54,000 ₴
Setting aside 1,500 ₴ a montha year to the first goal

Where to keep it

In a separate account, not on the card you pay with every day. Not because that’s safer from thieves, but because it’s harder to dip into in passing. Distance from your money is protection too.

The main rule

The reserve is not part of the money you can spend. When you work out how much you can spend today, subtract it right away, together with the rent. Otherwise it quietly gets spent on small things, and you won’t even notice when.

You can use it when the washing machine breaks or the job disappears. A sale on a TV is not that case.

Tell FUNFIN once how much is off-limits, and that money will no longer show up among your free funds.

Set aside a reserve

Why counting by the month is a bad idea

Almost all money advice is built around the month: a monthly budget, monthly spending, a monthly report. That suits an accountant. It doesn’t always suit you.

If your salary arrives on the 25th, your real period runs from the 25th to the 25th, not from the 1st to the 30th. And if you work for yourself and payment arrives “sometime in early October,” the period is different every time.

So the right question isn’t “how much will I spend in October,” but “how much do I need to stretch until the next money.”

Today is September 19
Until the end of the month11 days
Until the client pays on October 819 days
You should count over19 days

A difference of eight days seems minor until you divide money by it. 8,320 ₴ over 11 days is 756 ₴ a day. Over 19 days it’s only 437 ₴. The same sum, but a different way of living.

Promised and confirmed are different things

If a client said “I’ll transfer it tomorrow” and that’s their habit, you can count the money as yours. If they said “I’ll try this month,” don’t. Put that sum to one side and calculate without it. If it arrives, it’s a pleasant surprise. If it doesn’t, you’ve lost nothing, because you weren’t counting on it.

FUNFIN counts the days to your next money itself, and shows what’s only promised separately, out of the number.

Count to the next money

Your loan: what you’re really paying for

A loan payment is one payment, but it goes to two different places. The first part reduces the debt itself. The second is what you pay the bank for giving you the money before you’d earned it.

At the start, most of the payment goes to the bank, and the debt barely shrinks. Toward the end it’s the opposite: the debt melts quickly. That’s why the first months feel pointless — you keep paying and the sum hardly moves.

One payment on a car loan, 12.5% a year
You pay9,460 ₴
Of which reduces the debt7,222 ₴
Of which to the bank for the loan2,238 ₴

What to do about it

  • Look not at the payment, but at the total of all payments. Two loans with the same monthly payment can cost different amounts if one runs longer.
  • Ask whether you can pay more. Every extra hryvnia on top reduces the debt itself, and so the bank’s fee in every month after.
  • Check for a penalty for early repayment. It’s a one-sentence question, and it can save a lot of money.

The most dangerous case

If the payment is so small that the debt doesn’t shrink at all, you’re paying only for the use of the money. A debt like that can be “paid off” for years while the sum doesn’t budge. It happens most often with credit cards, when you make only the “minimum payment.”

FUNFIN shows each payment separately: how much goes to the debt, how much to the bank, and when the loan ends.

See your loan

Which debt to pay off first

When you have several debts, any money beyond the required payments can go to any one of them. The order matters, and there are only two methods.

Method one: the most expensive

Pay off the debt with the highest interest rate. Mathematically it’s the cheapest: you eliminate whatever eats the most money each month.

Method two: the smallest

Pay off the smallest debt, whatever its interest. It comes out a bit more expensive, but one debt disappears fast. The list gets shorter, and that’s noticeable even without a calculator.

Three debts, and 3,000 ₴ free on top
Credit card, 40% a year28,000 ₴
Car loan, 12.5% a year214,300 ₴
Borrowed from a friend, no interest6,000 ₴
Cheapest to start withthe credit card

The honest answer is this. If you know you won’t give up halfway, take the first method: it’s cheaper. If you need to see results quickly so you don’t lose heart, take the second. The worst option is paying a little to everyone: then no debt ever closes, and the fees run on all of them at once.

FUNFIN keeps all your debts in one list and shows how much you’ll pay on each by the end.

Make a list of debts

Subscriptions cost more than they seem

Subscriptions are dangerous not because of the amount, but because you don’t see them. The money leaves by itself, and the bank’s notification comes once a month and gets lost among the others.

A typical set
Music149 ₴
Video249 ₴
Cloud photo storage79 ₴
Games199 ₴
Fitness app299 ₴
Per year11,700 ₴

What to do today

  1. Open your statement for the last three months and find everything that repeats with the same amount.
  2. Ask about each one: did I use this last week?
  3. If not, switch it off. You can switch it back on in a minute, and nothing will be lost.

The free-month trap

A free period exists not so you can try something, but so you’ll forget. When you switch one on, set a reminder for the day before it ends. It’s tedious, but it’s the only thing that works.

And the main point: a subscription is a promised payment just like rent, only smaller. It too should be subtracted in advance, not discovered after the fact.

Connect your card, and FUNFIN will spot the payments that repeat every month.

Find your subscriptions

You paid for two

1,240 ₴ left your card, and your statement will show exactly 1,240 ₴. But your dinner cost 620 ₴. The other half isn’t your expense — it’s money that will be paid back to you.

If you record the whole amount as your own, you get a falsehood: it will look like you spend more than you really do. And then comes the worst part. You see inflated spending, get scared and start cutting back where you don’t need to.

How to record it honestly

  1. Record the full amount: 1,240 ₴ really did leave your card, and your account balance confirms it.
  2. Split it in two: your half goes to expenses, the other half is marked as awaiting repayment.
  3. When your friend pays you back, close that half. It isn’t income, it’s just a repayment.
Dinner for two, September 18
Left the card1,240 ₴
Your dinner, as an expense620 ₴
Your friend’s dinner, awaiting repayment620 ₴

About people, not money

It’s easiest to agree before the bill arrives, not after. One sentence, “shall we split it?”, removes all the awkwardness. And one more thing: if the debt is small and the person forgot, it’s simpler to forget it too. Friendship is worth more than 620 ₴.

In FUNFIN you can split one purchase into parts, and only your part goes into your expenses.

Split a purchase

The “wait a day” rule

Most unnecessary purchases aren’t about money, they’re about the moment. A sale, a nice shop window, a bad day, an ad that lands at exactly the right second. After an hour the urge isn’t as strong, and after a day it’s often gone altogether.

The rule itself

Anything that costs more than a set amount — say, 1,000 ₴ — and isn’t needed today waits 24 hours. Put it in the cart and close the app. For something truly expensive, wait a week.

The next day, one of two things will be true. Either you’ve forgotten about it — which means you didn’t need it. Or you still want it, and now it’s a calm decision, not an impulse. That’s a perfectly good reason to buy.

Why it works

You aren’t forbidding yourself anything. Bans end badly: people hold out for two weeks and then buy three times as much. Here you’re simply moving the decision to a time when the emotion has passed.

A handy trick: convert the price into days

If your daily number is 437 ₴
A jacket4,370 ₴
That’s your whole10 days

“Four thousand” is an abstraction. “Ten whole days” is already clear. Sometimes after converting you want the thing even more, and that’s an answer too.

FUNFIN always shows your daily number, so you can convert a price into days right at the checkout.

Find your daily number

How to start tracking and not quit

People give up tracking their spending in the second week. The reason is almost always the same: they try to record everything. It’s slow, boring and, above all, unnecessary.

Three things that really matter

  1. How much you have right now.
  2. What will definitely leave your card before the next money arrives.
  3. How much is left for you.

That’s it. It’s enough to stop worrying. Categories, charts and reports can be added later if you feel like it. Or not at all.

The simplest start

Connect your card so purchases record themselves. Manual work is the main reason people quit. After that, spend five minutes once a week: look at what was recorded and fix anything that’s off.

If you skipped a week

Don’t start over, and don’t try to remember every purchase. Just check how much is in the account now and carry on. A skipped week broke nothing.

And remember why you’re doing all this. The goal isn’t to know what every coffee cost. The goal is to get rid of that anxious “will I have enough?” in your head. When you have one honest number, that question simply disappears.

FUNFIN records your purchases itself and keeps these three things on one screen.

Start today

You can work all this out by hand. Or not at all.

FUNFIN does the same subtraction every day and shows every line so you can check it. Your first number appears after step two.

Create an account How it works Free. No password needed.