Theory
Spending plan: needs, wants and fun money
A spending plan that covers needs, saving and the things that make life good.
~5 min read · 6 exercises · 250 points
Before you start
A plan, not a diet
You're still helping Sam's family with their money. Sam coordinates support at Klasna; he and his wife live on two salaries with a young child. Last time you found out where one month's money actually went, and now the month's spending is sorted.
Sam wants a plan that stops the monthly shortfall, but he won't live on buckwheat. In this lesson you'll draw up a spending plan that decides in advance where each hryvnia goes, with room for the things that make life good.
Essentials or flexible: the one-month test
A spending plan sorts every category with one question: can you skip this for a month without harm? If not, it's essential — a need. If you could change it starting next payday, it's flexible — a want.
Rent is essential: skip a month and the home is at risk. Installments are essential for now — a missed payment can mean fees and a worse credit record — but they end (four payments left on the washing machine, six on the laptop). Groceries are essential as a need, though the amount has room to move: food can't drop to zero, but where and how much you buy can. Delivery and subscriptions are flexible: the same need can be met from the groceries, and a subscription can be paused any month.
The label marks what can't fall to zero, not how big the number has to be.
- DoRent: essential — skipping a month risks the home.
- Don'tFood delivery: essential, because the family has to eat.
The need (food) is essential; delivery is one flexible way to meet it — the groceries already do.
What share essentials really take
Once each category is labelled, add up the essential lines and compare the total with income. The share tells you how much room is left before any wants.
Sam's essentials: rent 16,000 + utilities 3,350 + phone and internet 640 + kindergarten 4,500 + groceries 12,425 + public transport 365 + pharmacy 1,025 + installments 3,150 + card interest 1,480 = 42,935 UAH. Against 56,000 income that's 42,935 / 56,000 ≈ 76.67%.
Dataset · 18 rows
Sam's pay cycle by category
5 September to 4 October 2026, 62,858 UAH in total. Income: 31,000 + 25,000 = 56,000 UAH.
First 5 of 18 rows
Sam guessed essentials were about half. They're over three-quarters, and that changes the plan: only about 13,000 UAH is left for everything flexible and for saving. Debt payments (installments and card interest, 4,630 together) are part of the essential block — they can't be skipped without harm, even though they'll shrink as the debts end.
- DoAdd all essential lines: 42,935 UAH, then 42,935 / 56,000 = 76.67%.
- Don'tEssentials are rent, utilities and food — about half.
That leaves out kindergarten, transport, pharmacy and debt payments; the real share is 76.67%.
How big a cut the gap needs
To close a shortfall, first find how much room is left for the part you can change. Essentials are fixed for now at 42,935 UAH, so flexible spending can be at most 56,000 − 42,935 = 13,065 UAH if the cycle is to cost no more than income.
Sam's flexible spending was 19,923. The cut needed is 19,923 − 13,065 = 6,858 UAH — the same number as total spending minus income (62,858 − 56,000). That's 6,858 / 19,923 ≈ 34.4% of flexible spending: a third, not everything.
Seeing the cut as a third of one part, rather than a vague "spend less," makes it doable. The plan trims flexible first because it can change by next payday; essentials shrink too, but over months.
- DoRoom for flexible: 13,065; cut = 19,923 − 13,065 = 6,858 UAH.
- Don'tFlexible must drop to zero to close a 6,858 gap.
Only a third has to go: 6,858 of 19,923, leaving 13,065.
Where a plan takes money first
When a cycle costs more than it earns, the first move should be both effective and livable. A plan takes money from flexible spending first, starting with what gives the least value per hryvnia.
Flexible categories can change by next payday, so trimming a few taxis and delivery orders that weren't worth it closes much of the gap without pain, and a kept fun-money line keeps the plan alive. Essentials shrink too, but slowly: the card interest goes once the card is paid off, the installments end, groceries have some room — months of work, not one payday.
The moves to avoid are the drastic ones: halving groceries overnight is hard to keep with a child, skipping installments risks fees and a worse credit record, and zeroing all flexible spending usually breaks in the first bad week, so the gap returns.
Why a plan keeps some fun money
A spending plan only works if people can actually live with it. A plan that bans every pleasure until the last debt is gone looks disciplined on paper and rarely survives a month: the first exhausting week ends in a big unplanned order and a dose of guilt, and the plan is abandoned.
The fix is fun money — a modest, named amount for each adult, spent on anything, no questions asked. Because it's planned inside flexible spending, it isn't stolen from the grocery or the savings line, and it gives the rest of the plan something to hold onto.
So saving comes first and fun money stays, even while a debt is being paid down. A smaller, livable plan that lasts beats a strict one that collapses.
Ready to practise?
Answer the lesson's exercises and earn 250 points the first time you finish it.
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