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Reading the forecast · plain-English guide

Logarithmic chart scale

Keep smaller values readable beside very large ones. A logarithmic-style scale changes the chart’s shape while preserving its dollar amounts.

2 min readWorked example included
How to read itLog
Core relationshipdisplay height = transformed(value); labels and underlying dollars remain unchanged

Conceptual illustration. The annual engine resolves the connected taxes and cash flows described below.

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The basics

On a normal linear axis, twice the pixel height means twice the value. On a log-like axis, equal visual steps represent multiplicative changes. MoneyWhatIf uses a bent scale so values near zero remain readable while very large values are compressed.

Illustrative numbers

Reading equal visual steps

Linear intuition$20k is twice $10k

Log intuition$10k→$100k resembles $100k→$1m

MoneyWhatIflinear near zero, compressed above

Always read the dollar label or tooltip. A segment that looks twice as tall on the bent scale is not necessarily twice the money.

Calculation transparency

How it works in MoneyWhatIf

  1. 01

    The control transforms only chart geometry after the plan has been calculated.

  2. 02

    Positive and negative cash-flow directions remain separate around zero; labels retain the original settled amounts.

  3. 03

    Turning the control off restores proportional linear heights without changing any ledger row.

Keep in mind

Model limits

Stacked segment areas are harder to compare proportionally on a nonlinear axis.

The transformed chart is for pattern recognition, not measuring values by pixel height.

The scale does not improve, smooth, or alter the forecast—it only changes its visual lens.

This explanation documents the planning model. It is educational, not individualized tax, legal, Medicare, or investment advice.

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Where to use it

See this concept in context, with a guide to each page and its controls.

The words behind it

Related financial terms

Plain-English definitions, with 2026 figures and worked examples, from the financial terms glossary.

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