Macro

Public sector

The budget sets government revenue against spending, a progressive tax takes a larger share as income rises, and public debt is borrowing the state still owes.

CAPS

Grade 12 · Economics · Macro

Economics wants the concept, then the diagram or the data, then the consequence.

The papers
Paper 1 is macroeconomics and economic pursuits. Paper 2 is microeconomics and contemporary economic issues. Each paper is 150 marks.
How to write it
Define the term as CAPS uses it. If a graph is asked for, label both axes, the curves, and the equilibrium or the shift. Then say what happens to price, quantity, growth, inflation or unemployment. A curve with no labels does not explain.
How a marker reads it
A common mix-up is calling public debt the same thing as this year's deficit, when the deficit is one year's gap and the debt is the total still owed.

Essays are marked on the introduction, a body that applies the theory, and a conclusion that answers the question. A list of definitions is not an argument.

Worked theory

Worked theory. A skilled employee in Sandton pays income tax on a high salary. A no-fee school in a nearby township receives government funding that pays its teachers. The budget link is that tax from higher incomes helps fund spending the household at that school could not cover alone. That is the progressive-tax idea in plain words. If over the years government spends more than it collects, it borrows, and public debt is the amount still owed. Interest on that debt is itself a spending item in a later budget. No official deficit number is required to see the chain from the payslip to the classroom to the debt.

More worked examples

VAT loaf and a bonus
VAT takes the same rate on a loaf whether the buyer earns little or a lot, so VAT on its own is not the progressive part of the system. Income tax on a large bonus takes a bigger slice of that extra income than of a small wage. The progressive idea lives in the income-tax brackets. Both VAT and income tax can sit in one budget and still do different jobs. A loaf does not become progressive just because the state collects tax on it.
Interest on older loans
A provincial education office spends part of this year's money on salaries. Separately, the national budget uses some revenue to pay interest on money borrowed in earlier years. That interest exists because past spending exceeded past revenue. Public debt is those earlier loans still outstanding. Paying the interest services the debt and does not, by itself, wipe the debt out.

In ordinary words

Revenue is mostly tax, and spending covers items such as education, grants, health and interest. A progressive income tax means a high salary pays a higher rate on its upper slice than a low salary does, so the higher income contributes more toward services a poor household could not buy alone. When spending exceeds revenue in a year, the gap is a budget deficit and it is financed by borrowing. Public debt is the stock of that borrowing still owed, interest on it uses future tax, and the chain can be understood without any particular deficit figure.

In South Africa

A Sandton payslip and a no-fee classroom are linked by tax revenue that pays the teachers.

Part 1 / 4

What it is

The budget sets government revenue against spending, a progressive tax takes a larger share as income rises, and public debt is borrowing the state still owes.

More worked examples

Board walkthroughs on this topic. Open one, copy the working, then try the next.

Example 1 / 20

Explain the Laffer curve.

How we got there

Read this like a teacher at the board. We go slowly, name every number, and say why we take each step.

Explain in another language · 11

1. What is the question asking?

Read the question twice. Circle the unknown. Underline every number and unit. The paper is asking: Explain the Laffer curve.

Before any working — hunt first

Given

Numbers and units already in the sentence: no numbers yet — only a name, a diagram, or a worded unknown. Copy each one into a column. A name without a number is not given.

Missing

After you copy the given, the letter that still has no number is missing. The paper is pointing at: Explain the Laffer curve. Circle that word — that is the missing variable.

Find

We are required to find: Explain the Laffer curve. Write that as a symbol on the left, with a question mark, before you touch a formula.

Calculate

What we need to calculate: Too-high taxes lower revenue. Then substitute the given, one line at a time, to get Explain the Laffer curve.

In other words — as if you have never seen this before

If you have never seen this before: Too-high taxes lower revenue. We will name a method in words, write the formula with no numbers, then substitute one line at a time.

2. What do we already know?

Taxes and revenue.

3. Which method — and why this one?

Too-high taxes lower revenue.

4. Step-by-step working

01 / 08
Step A — Read the question twice
Slow down. Circle the word that names the unknown. Underline every number and its unit. Do not grab a formula yet — first decide what the paper is actually asking.
Why this step: If you can say the method in a sentence, you will pick the right formula. First-timers skip this and grab the first equation they remember.
02 / 08
Step A2 — Hunt: Given, Missing, Find, Calculate
Given: Numbers and units already in the sentence: no numbers yet — only a name, a diagram, or a worded unknown. Copy each one into a column. A name without a number is not given. Missing: After you copy the given, the letter that still has no number is missing. The paper is pointing at: Explain the Laffer curve. Circle that word — that is the missing variable. Find: We are required to find: Explain the Laffer curve. Write that as a symbol on the left, with a question mark, before you touch a formula. Calculate: What we need to calculate: Too-high taxes lower revenue. Then substitute the given, one line at a time, to get Explain the Laffer curve.
Why this step: Do not name the letters yet. First hunt: what already has a number (Given), what has no number (Missing), the word the paper wants (Find), and which formula still contains the missing letter (Calculate).
03 / 08
Step B — Write the given in a column
Taxes and revenue.
Why this step: A column with units stops you mixing cm with m, or minutes with seconds. Markers can also see you started correctly.
04 / 08
Step C — Name the method in words
Too-high taxes lower revenue.
Why this step: If you can say the method in a sentence, you will pick the right formula. First-timers skip this and grab the first equation they remember.
05 / 08
Explain
Up to a point higher tax rates raise revenue; beyond it, incentives to work and invest fall and evasion rises, so revenue falls.
Why this step: We only do one job per line so a marker can follow the marks — and so you can find a slip without starting over.
06 / 08
Step G — Sense-check the size
Ask: is this the kind of number a Grade 10–12 paper would want? A speed of 3 000 ms for a learner walking, or a probability bigger than 1, means a unit or algebra slip. Estimate first: round the numbers and do the sum in your head.
Why this step: Markers write ‘unrealistic’ in the margin when the method is right but the size is wild. A 10-second head check often finds a missing 10² or a unit that never changed.
07 / 08
Step F — Box the answer with its unit
There is an optimal tax rate.
Why this step: A number without a unit is half a mark on a Physics paper, and a marker can miss a Maths answer that is buried in working.
08 / 08
Step H — What the marker is looking for
On an NSC memo you usually earn: (1) a method mark for naming the right formula or idea in words, (2) an accuracy mark for substituting the given numbers with units, (3) an accuracy mark for the boxed answer with its unit. Write those three lines even if you are unsure of the arithmetic — blank pages score zero.
Why this step: First-timers chase the final number and leave the method blank. The memo still pays out for the idea and the substitution even when the last line is wrong.

5. The answer

There is an optimal tax rate.

Copy onto your answer sheet — in this order

Answer: There is an optimal tax rate.

6. Check it like a marker

Used to argue for tax cuts.

7. A trap first-timers fall into

First-timers often grab the first formula they remember, mix units (cm with m, minutes with seconds), or drop a minus sign. Write the formula in words first: “this equals that, because…”

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