The 2026 Tax Planning Guide
What to review now—while there is still time to do something about it.
Tax preparation reports what already happened.
Tax planning gives you an opportunity to make informed decisions before the year is over.
The Fastidious 2026 Tax Planning Guide is a practical checklist for individuals, business owners, independent professionals, and growing companies who want to enter tax season better prepared.
Inside, we walk through the areas worth reviewing before year-end—from income and estimated taxes to business expenses, retirement contributions, entity considerations, documentation, and decisions that may become harder to change after December 31.
Get the complimentary 2026 Tax Planning Guide.
Filing a tax return and planning for taxes are not the same thing.
By the time a return is prepared, most of the transactions affecting that return have already happened.
Income has been earned.
Purchases have been made.
Payroll has been processed.
Retirement contributions may have been funded—or missed.
Estimated tax payments may have been made, underpaid, or overlooked entirely.
Entity decisions have already affected how income moved throughout the year.
That is why thoughtful tax planning starts before tax season.
A year-end review gives you an opportunity to identify what still requires attention, estimate where you may stand, organize documentation, and make decisions with more information instead of discovering the result when the return is already being prepared.
What's Inside the 2026 Tax Planning Checklist
Income & Tax Projection
Review your expected 2026 income, taxable income, withholding, estimated payments, and major changes from the prior year.
Business Income & Expenses
Identify deductible business expenses, incomplete documentation, equipment purchases, business-use assets, reimbursements, and transactions that deserve a closer look before year-end.
Estimated Taxes
Review what has already been paid, what may still be due, and whether your current payment strategy reasonably reflects your expected tax liability.
S Corporation Planning
Review reasonable compensation, shareholder distributions, payroll, reimbursements, retirement contributions, and other year-end items that can create problems when ignored until tax preparation.
Retirement & Tax-Advantaged Accounts
Consider contribution opportunities and deadlines for retirement plans and other tax-advantaged accounts as part of your broader tax strategy.
Major Life & Financial Changes
Marriage, divorce, a new child, a home purchase, investment activity, business growth, self-employment, a new entity, and other significant changes can affect more than your filing paperwork.
Records & Documentation
Identify missing receipts, mileage records, contribution acknowledgments, basis information, business documentation, and other records before tax season begins.
Year-End Deadlines
Some decisions can be handled when your return is prepared.
Others cannot.
The guide helps you distinguish between items that can wait and items worth addressing before the calendar closes.
For Business Owners: Profit Is Only Part of the Tax Conversation
A profitable year can be excellent news.
It can also create a tax obligation that requires planning.
Business owners should understand more than the balance in the business bank account. Your tax picture may be affected by entity structure, payroll, owner compensation, distributions, estimated taxes, retirement contributions, asset purchases, deductible expenses, and the timing of certain transactions.
Good tax planning asks a better question than:
“How much did the business make?”
It asks:
“What does that result mean for the business and for you personally?”
The 2026 Tax Planning Guide gives you a structured place to start that review.
[ GET THE 2026 TAX PLANNING GUIDE → ]
