dougzandstra

Doug Zandstra CPA CFE EA

9040  Town Center

Lakewood Ranch, FL  34202

941 538 5630

616 970 3000

dougzandstra@gmail.com

 

There are two broad categories of tools. Retirement planners are comprehensive applications that build a full financial plan, model multiple scenarios, run simulations, and save your data over time. Retirement calculators are focused, single-purpose tools that answer one question — a withdrawal rate, a Social Security claiming decision, a required minimum distribution — and generally don’t store data between sessions. Many people use both: calculators to find the right inputs, and a planner to bring them together.

Retirement Planners

Comprehensive tools for asset allocation, tax considerations, cash flow, and multi-decade scenario modeling.

Planners Used by Advisors

Professional-grade platforms designed for advisors rather than individuals. You may already have access to one of these through a financial advisor.

Retirement Calculators

Tools that estimate the likelihood a retirement plan succeeds, based on historical returns, Monte Carlo simulation, or both. (H = historical, MC = Monte Carlo, B = both.)

Other Planning Tools

Focused tools whose output can feed directly into a retirement planner — claiming strategies, longevity estimates, backtesting, and tax figures.

These are third-party tools listed for convenience. They are not endorsements, and none replaces personalized advice. If you’d like help applying any of these to your own situation, please get in touch.

Starting Your Business

Doug Zandstra CPA CFE EA 9040 Town Center Lakewood Ranch, FL 34202 941 538 5630 616 970 3000 dougzandstra@gmail.com   Starting a Business: Legal Structure…

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Tips

Doug Zandstra CPA CFE EA 9040  Town Center Lakewood Ranch, FL  34202 941 538 5630 616 970 3000 dougzandstra@gmail.com   2025 Tip Deduction   The One…

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Overtime

Doug Zandstra CPA CFE EA 9040  Town Center Lakewood Ranch, FL  34202 941 538 5630 616 970 3000 dougzandstra@gmail.com   The New 2025 Overtime Deduction  …

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Car Loan Interest

Doug Zandstra CPA CFE EA 9040  Town Center Lakewood Ranch, FL  34202 941 538 5630 616 970 3000 dougzandstra@gmail.com   2025 Car Loan Interest Deduction  …

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Starting Your Business

Doug Zandstra CPA CFE EA 9040 Town Center Lakewood Ranch, FL 34202 941 538 5630 616 970 3000 dougzandstra@gmail.com   Starting a Business: Legal Structure…

Read More »

Tips

Doug Zandstra CPA CFE EA 9040  Town Center Lakewood Ranch, FL  34202 941 538 5630 616 970 3000 dougzandstra@gmail.com   2025 Tip Deduction   The One…

Read More »

Overtime

Doug Zandstra CPA CFE EA 9040  Town Center Lakewood Ranch, FL  34202 941 538 5630 616 970 3000 dougzandstra@gmail.com   The New 2025 Overtime Deduction  …

Read More »

Car Loan Interest

Doug Zandstra CPA CFE EA 9040  Town Center Lakewood Ranch, FL  34202 941 538 5630 616 970 3000 dougzandstra@gmail.com   2025 Car Loan Interest Deduction  …

Read More »