Q3 Estimated Tax Prep 2026 (Sept 15 Deadline Worksheet)
Q3 estimated tax prep worksheet. The September 15 deadline, YTD income calculation, safe harbor math, and how to file Form 1040-ES correctly.
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Insights and Updates
FinancialAha Blog
Learn more about FinancialAha, financial tracking, planning, concepts, implementation, usage, the vision behind FinancialAha, and more.
Homeowner's Budget Template: Utilities, Taxes, and Maintenance
Homeowner's budget template for the bills renters never see: property tax, insurance, HOA, utilities, and a maintenance reserve in a year-long structure.
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Monarch Money vs Rocket Money: Which Fits Which User
Monarch Money vs Rocket Money compared by feature, pricing, and use case. Side-by-side table plus the spreadsheet alternative most users land on.
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Compound Interest Calculator in Google Sheets (Step-by-Step)
Build a compound interest calculator in Google Sheets. Formula, monthly contributions, real vs nominal returns, and projections at 10, 20, and 30 years.
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Why Budgeting Apps Fail After 3 Months (And What Works Instead)
Why most budgeting app users quit by month 3. The novelty curve, friction triggers, and the structural reasons spreadsheets often outlast subscriptions.
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How to Budget with Irregular Income in Google Sheets
How to budget irregular income in Google Sheets: the baseline method, a four-tab spreadsheet, and the buffer that smooths peaks and dips for freelancers.
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Home Renovation Budget Spreadsheet (Contingency + Phase Costs)
Home renovation budget spreadsheet with phase tracking, contingency math, vendor quotes side by side, and the 15-20% buffer that survives surprise costs.
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State of Personal Finance Mid-2026: What the Data Shows
Mid-2026 state of personal finance: saving rate, credit card balances, mortgage burden, retirement balances, inflation, and net worth, from Fed and BLS data.
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Mid-Year Tax Checkup: 8 Things Worth Reviewing in June
A mid-year tax checkup with a spreadsheet: 8 areas to review in June - withholding, estimated payments, retirement and HSA pace, deductions, and life changes.
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Summer Camp Cost Calculator Spreadsheet
Summer camp cost calculator spreadsheet covering tuition, transport, gear, extras, and the per-week comparison that helps multi-child families decide.
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How to Calculate ROI on a Rental Property (Spreadsheet)
How to calculate rental property ROI in a spreadsheet: cap rate, cash-on-cash return, total return, and the realistic vacancy and expense assumptions that matter.
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Spreadsheet Budgets for Couples: Shared Sheets That Work
Spreadsheet budgets for couples: shared sheet structure, income-split models, the 'his/hers/ours' three-account setup, and patterns that survive disagreement.
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PocketGuard Alternative: Spreadsheet "In My Pocket" Approach
PocketGuard's 'in my pocket' calculation rebuilt as a spreadsheet. Bills, goals, and a daily spendable number - without the $74.99 a year.
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How to Set Up Sinking Funds in Google Sheets
Sinking funds in Google Sheets: how to plan for irregular expenses like insurance, holidays, car repairs, and annual fees without the bills surprising you.
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Roth vs Traditional IRA Spreadsheet (Side-by-Side Math)
A side-by-side Roth vs Traditional IRA spreadsheet. Today's tax savings, future withdrawal tax, projected balance at 60, and the breakeven tax rate.
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