Cashflow: a complete walkthrough

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The Calm Sea Cashflow page with total income, total expenses, total loan repayments and total savings cards above the year cash flow diagram

The Cashflow section shows where your money goes each year. It pulls together your income, taxes, expenses, loan repayments and contributions, then shows what's left over as savings, for this year and every year of your projection.

What you'll be able to do: By the end of this guide, you'll know how to read your yearly cashflow, follow it through the cash flow diagram, compare years in the table, and choose where surplus cash goes.

  1. Finding the Cashflow page

    Open Cashflow in the sidebar. Income and Expenses sit underneath it and have their own guides: Income and Expenses.

  2. Reading the summary cards

    Total Income - everything coming in this year, including employer contributions.

    Total Expenses - your living costs and property costs.

    Total Loan Repayments - what you repay across all loans.

    Total Savings - what's left after taxes, expenses, repayments and contributions.

  3. Following the year cash flow diagram

    The Year Cash Flow diagram traces every dollar from left to right. Income sources on the left join into total income. Taxes split off, and what remains is divided between loan repayments, expenses, retirement contributions, investments and cash.

    Year cash flow diagram for 2026 showing household income, rental income and employer contributions flowing into taxes, loan repayments, expenses, a 401k and a savings account

    Drag the Year slider to see the same diagram for a future year, for example the year after you retire or the year a loan is paid off. If you're new to this kind of chart, the Sankey diagram guide explains how to read one.

  4. Using the Cashflow Summary

    Under the diagram, the Cashflow Summary lists each part of the year's cashflow: income, taxes, expenses, loan repayments, investments, retirement and savings. View links take you to the page where each one is managed.

    Cashflow Summary table with income, taxes, expenses, loan repayments, investments, retirement and savings for the year
  5. Comparing years in the Table tab

    The Table tab has one row per year with total income, taxes, expenses, loan repayments, contributions, withdrawals and savings. It's the quickest way to spot years when spending jumps or income drops, such as the first year of retirement.

    Cashflow table with yearly total income, taxes, expenses, loan repayments, contributions, withdrawals and savings
  6. Checking the tax breakdown

    The Details tab starts with a Tax Breakdown estimates for a chosen year: each tax type, the amount, the income it's charged on, and its effective and marginal rate. Choose a year from the list, or click its bar in the chart. The taxes shown depend on the tax settings described in the Income guide. The marginal tax rate guide explains the difference between the two rates.

    Tax Breakdown for 2026 showing each tax type with its amount, the income it's charged on, and effective and marginal rates
  7. Choosing where surplus cash goes

    Also on the Details tab, Surplus Cashflow sets the cash account that receives each year's surplus. Surplus is added to that account at the start of the next year, and a deficit is drawn from it. Pick the savings account you'd really use.

    Surplus Cashflow setting with a Savings Account chosen as the destination for each year's surplus

Like the other dashboards, Cashflow has Forecast Options to show future years in today's dollars. For the bigger picture of how surplus cash builds your net worth over time, see the Plan guide.

Cashflow: a complete walkthrough | Calm Sea