Premium planning resource · US$15 once

Savings & Growth Workbook

Compare three growth plans, calculate the contribution needed for a savings goal, and keep the assumptions behind each projection visible.

Buy the workbook — US$15 ↗Use the free planning checklist

Savings and Growth Workbook: three scenarios, yellow assumption cells, and calculated results — Real workbook preview · Enter assumptions manually in Excel or Google Sheets.

Inside the workbook

Five sheets, each with a specific job.

Scenario ComparisonCompare three compound-growth plans with editable assumptions and a clear split between principal, contributions, and estimated growth.
Savings GoalEstimate the recurring amount needed by a target date or the time needed with a contribution you choose.
Growth ScheduleReview annual balances in a formula-linked schedule and editable line chart.
Worked ExamplesTrace two examples that are reconciled to the same tested calculation engines used by this site.
Guide & LimitsKeep instructions, assumptions, exclusions, methodology links, and version notes with the model.

58-second workbook tour

See how the five sheets work together.

Follow the path from editable assumptions to comparable scenarios, a savings target, an annual schedule, worked examples, and documented limits.

Visual tour · 00:58No narration. Explanations appear on screen.

Tour summary: the video introduces Scenario Comparison, Savings Goal, Growth Schedule, Worked Examples, and Guide & Limits. It closes with the verified format and license summary. No customer or financial-account data appears.

Workbook gallery

Inspect the four core views.

Use the online calculators for a quick answer. Use the workbook when you want to compare assumptions and keep a planning record.

Workbook scenario comparison with three editable growth plans and calculated final balances — Compare starting balances, contributions, rates, timing, and horizons side by side.

Workbook savings goal planner showing the required periodic contribution and time to goal — Estimate a required recurring contribution or test how long a planned contribution may take.

Workbook annual growth schedule with projected balances and a formula-linked line chart — Review year-by-year balances and compare the growth paths in a linked chart.

Workbook worked examples for compound growth and savings goal calculations — Trace representative inputs and reconcile them with the site's tested calculation engines.

Built for inspection

The formulas and limits remain visible.

Tested calculations

Representative compound-growth and savings-goal results were reconciled to the site's TypeScript engines, including zero-rate and contribution-timing cases.

Ordinary formulas

The workbook uses common spreadsheet functions, no macros, and clearly marked yellow input cells.

Clear boundaries

Taxes, fees, inflation, changing rates, irregular deposits, and personalized investment recommendations are outside the current scope.

Hosted delivery

Lemon Squeezy handles payment and gives you access to the digital files after purchase. Contact support if delivery or a workbook file fails.

Try the calculation first

Try the free tools before buying.

Project a balance with the compound interest calculator, or solve for a recurring contribution with the savings goal calculator.

Review the formulas, timing assumptions, and exclusions.

Purchase protection

Review the terms before buying.

The workbook is delivered digitally through Lemon Squeezy, the merchant of record. Our policy provides a 14-day refund-request period plus remedies for duplicate charges, failed delivery, and material defects.

Read the Purchase Terms · Read the Refund Policy · Contact support

Common questions

Frequently asked questions

Can I buy the workbook now?

Yes. The workbook costs US$15 as a one-time purchase. Lemon Squeezy handles the secure checkout and digital delivery.

Which spreadsheet formats have been tested?

The Excel workbook has been recalculated and reviewed in Microsoft Excel and imported as a native Google Sheet. Both uses retain the five worksheets, formulas, input controls, and growth chart.

Does the workbook provide financial advice?

No. It organizes educational projections from the assumptions you enter. It does not recommend investments or guarantee an outcome.

Does it require macros or an account?

The workbook uses ordinary spreadsheet formulas and no macros. The Excel file works locally; a Google account is needed only if you choose to use the Google Sheets version.