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Management accounting

Profit & Margin Bridge Calculator

Compare revenue, variable costs and fixed costs across two compatible periods. See the arithmetic contributions to profit and margin change.

29 / BRIDGE TWO PERIODS

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Starting values are illustrative. Use your own costs, rates and assumptions.

INPUT GROUP 01

Baseline period

INPUT GROUP 02

Comparison period

Check the assumptions before acting on a result.

Read the method and example

YOUR CALCULATION

The bridge reconciles arithmetic profit changes between two comparable periods.

Baseline modeled profit

$15,000.00

Comparison modeled profit

$19,000.00

Profit change

$4,000.00

Baseline modeled margin

15.00%

Comparison modeled margin

17.27%

Margin change (percentage points)

2.273

Profit-change reconciliation

Profit-change reconciliation
ComponentProfit effect
Revenue change$10,000.00
Variable-cost change-$5,000.00
Fixed-cost change-$1,000.00
Total profit change$4,000.00

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Saving is optional and stays on this device. Unsaved edits are not kept when you leave. CSV includes every input and the current results.

Illustrative inputs loaded. Replace them with your own assumptions.

How the profit & margin bridge calculator works

Modeled period profit = revenue − variable costs − fixed costs. Margin is that profit divided by period revenue. Both periods must use the same scope, currency and cost classification.

The bridge adds revenue change, baseline variable cost less comparison variable cost, and baseline fixed cost less comparison fixed cost. Those contributions reconcile to profit change before display rounding. Margin movement is in percentage points, not percentage growth.

Losses are retained and zero revenue makes the associated margin undefined. This arithmetic bridge does not isolate price, volume, product mix or causal drivers, and does not restate financial statements, taxes or exceptional accounting items.

Worked example

Baseline revenue 100,000 less 60,000 variable and 25,000 fixed costs gives 15,000 profit. Comparison revenue 110,000 less 65,000 variable and 26,000 fixed costs gives 19,000. The bridge is +10,000 revenue −5,000 variable-cost effect −1,000 fixed-cost effect = +4,000 profit. Margins move from 15% to approximately 17.273%.

Sources and assumptions

The source material explains the underlying calculation or pricing structure. Entered prices, costs, schedules and scenario choices are your assumptions; this tool does not obtain supplier quotes or predict actual results.

  • Margin & Markup

    Use one cost and selling price to compare unit profit, margin on price and markup on cost.

  • Contribution & Target Profit Pricing

    Relate unit contribution to fixed costs, a target profit and a whole-unit sales volume.

  • Liquidity Ratios

    Build current, quick and cash coverage from explicit asset categories rather than entering overlapping totals.

  • Inventory Turnover & Days

    Calculate turnover and implied holding days using at-cost beginning/end inventory and compatible period COGS.

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