ChatDiagram
BLOCKDIAGRAM · BUDGET LINE

Budget Line Economics Diagrams: Examples & Generator

A budget line diagram is the cornerstone of consumer choice theory, showing all possible combinations of two goods a consumer can afford given income and prices. Our examples cover classic scenarios like income increases, per-unit taxes, quantity discounts, and even multi-good budgets, making it easy to grasp how constraints shift and bend.

4 EXAMPLES· UPDATED 2026-06-21
Make your own budget line diagram.

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ECONOMICS

Budget Line for Three Goods

ECONOMICS

Budget Line Shift: Income Increase (Movies & Popcorn)

ECONOMICS

Budget Line with Per-Unit Tax on Gasoline

ECONOMICS

Budget Line with Quantity Discount on Soda

ABOUT

About these examples.

Whether you're an economics student building intuition or an instructor preparing lecture slides, these visuals clarify the mechanics behind consumer optimization. Each example is interactive — dive in, tweak parameters, and watch the budget line adapt.

Ready to make your own? Jump to the generator and create a custom budget line diagram in seconds, no drawing skills needed.

HOW TO

Make one yourself.

  1. 1

    Choose the budget line template

    Start from a blank canvas or pick a pre-built example that matches your scenario, like a simple two-good budget.

  2. 2

    Define your budget parameters

    Enter income (I) and prices of the two goods (Px, Py). The diagram automatically plots the intercepts and connects them.

  3. 3

    Add shifts and bends

    Overlay additional lines for income changes, taxes, or kinks from quantity discounts. Adjust values with sliders to see real-time effects.

  4. 4

    Customize axes and labels

    Rename goods, set axis ranges, and add necessary annotations like 'Original Budget Line' or 'After Tax'. Use markdown for formatting.

  5. 5

    Export and share

    Download as PNG or SVG, or copy the shareable link. Embed in reports, presentations, or problem sets.

FAQ

Frequently asked questions

What is a budget line in economics?01
A budget line represents all possible combinations of two goods that a consumer can purchase given their income and the goods' prices. It's a straight line with slope -Px/Py, where the intercepts are I/Px and I/Py.
What causes a budget line to shift?02
Changes in income (shift outward or inward parallel) or a change in the price of one good (rotation around the opposite intercept) will shift the budget line. A price change of both goods by the same proportion also causes a parallel shift.
How do I create a budget line diagram with taxes?03
A per-unit tax on a good effectively increases its price, rotating the budget line inward around the untaxed good's intercept. Use the generator to add a tax parameter and instantly see the new constraint.
Can I model more than two goods on a budget line?04
The traditional diagram shows only two goods, but you can represent three by using one axis for a composite good (money spent on other goods) or by overlaying a third dimension. Our examples include a three-good scenario using smart axis labeling.
Is this tool suitable for academic publishing?05
Absolutely. Exported SVGs integrate seamlessly with LaTeX, web publications, and presentation software. You have full control over fonts, colors, and annotations.
Start from a blank canvas →

Open the AI editor and describe what you need — export PNG/SVG when you're done.

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