Tax Planning and Preparation: Documents, Key Concepts, and Strategies
Tax season often means tracking down forms from employers, banks, investment accounts, and retirement plans while trying to remember which expenses or financial decisions could affect your return. Missing a statement or overlooking a transaction can slow the process, so getting organized early is worth it.
But preparing a tax return is only one part of tax planning. The choices you make throughout the year, from how you contribute to retirement accounts to when you sell investments, can affect how much you owe.
At Holzberg Wealth Management, we consider taxes alongside your investments, retirement plans, and other financial decisions. Understanding the rules that apply to your situation can help you prepare for tax season and make better-informed decisions throughout the year.
Key Takeaways
Organizing income statements, investment records, and documents for deductions and credits can help you prepare an accurate tax return and avoid delays.
Understanding marginal tax rates, deductions, credits, capital gains, and dividends helps you evaluate the tax consequences of financial decisions.
Year-round tax planning creates opportunities to review retirement contributions, manage investment gains, and coordinate major financial decisions before deadlines pass.
What Documents Do You Need to File Your Taxes?
The documents you need depend on your income, the accounts you own, and what happened financially during the tax year. You won't need everything on this list, but reviewing each category can help you identify what to gather before filing.
1. Income and Employment Documents
Start with records showing how much you earned and what taxes you paid or had withheld.
W-2 forms: If you worked as an employee, your employer should provide a W-2 reporting your wages and tax withholdings.
1099 forms: These forms report various types of income, including freelance earnings, interest, dividends, investment sales, and retirement distributions.
Business income and expense records: If you're self-employed or own a business, gather income statements, receipts, and records of deductible business expenses.
Rental property records: Collect information about rental income, repairs, maintenance, insurance, property taxes, and other property expenses.
Other income documentation: Unemployment compensation, gambling winnings, and other income sources may require additional forms or records.
If you have income from several sources, make sure you account for each one. Side businesses, rental properties, and investments can create reporting requirements even when you also receive a regular paycheck.
2. Investment and Retirement Account Documents
Investment transactions and retirement account activity can affect your taxes in different ways. Account balances alone won't tell you what needs to be reported.
Gather the following documents when applicable:
Investment income and sales: Forms 1099-INT, 1099-DIV, and 1099-B, or a consolidated tax statement from your brokerage.
Retirement distributions: Form 1099-R for distributions from IRAs, employer retirement plans, pensions, and certain other accounts.
Social Security benefits: Form SSA-1099 if you received Social Security benefits.
Retirement contributions: Records of contributions to traditional and Roth IRAs, employer retirement plans, and other tax-advantaged accounts.
Roth conversions and rollovers: Statements showing conversions from traditional retirement accounts to Roth accounts and rollovers between eligible plans.
Equity compensation: Relevant W-2 information, Forms 3921 or 3922 when applicable, and records of stock option exercises, restricted stock vesting, or employee stock purchase plan transactions.
Before filing, check whether your brokerage has issued corrected tax forms. You should also verify the cost basis reported for investments you sold. Inherited investments, stock option exercises, and some transfers between accounts can require additional records to establish the correct tax treatment.
3. Documents for Deductions and Credits
Certain expenses and contributions may qualify for tax deductions or credits. Keep the records needed to support any amounts you plan to claim.
Depending on your circumstances, these may include:
Charitable contributions: Receipts and acknowledgment letters for cash donations, along with documentation for donated investments or other property.
Mortgage interest: Form 1098 and supporting records for potentially deductible mortgage interest.
State and local taxes: Records of eligible state and local income taxes or general sales taxes, along with property taxes. Deductibility is subject to applicable limits and other rules.
Medical expenses: Records of eligible out-of-pocket medical and dental expenses if you may itemize deductions.
Education expenses: Form 1098-T, tuition statements, and other records needed to evaluate education-related tax benefits.
Student loan interest: Form 1098-E, if applicable.
Childcare and dependent expenses: Records needed to determine whether you qualify for relevant tax credits.
Health savings account activity: Contribution records and documentation of HSA distributions.
Estimated tax payments: Confirmation of federal and state estimated payments made during the year.
Not every expense qualifies for a deduction or credit, and itemizing makes sense only when your eligible deductions justify it. Keeping records lets you and your tax preparer evaluate your options when preparing your return.
4. Documents for More Complex Financial Situations
Some financial events require additional documentation or coordination with your tax preparer. If any of the following apply, gather the relevant records before filing.
Real estate sales: Purchase-and-sale documents, records of property improvements, and depreciation information for investment properties.
Business ownership: Business financial statements and applicable partnership, S corporation, or other entity tax documents, including Schedule K-1.
Gifts and inheritances: Records of inherited assets, their valuation, and applicable estate or gift tax documents.
Qualified charitable distributions: Records of IRA distributions made directly to eligible charities, along with distribution statements and charitable acknowledgments.
Backdoor Roth IRA contributions: Records of nondeductible traditional IRA contributions, Roth conversions, and previously reported IRA basis. Form 8606 may be required.
Health insurance purchased through a marketplace: Form 1095-A, if applicable.
Solo 401(k) plans: Year-end account statements and information needed to determine whether additional reporting is required.
Some tax forms, particularly those related to partnerships and other business interests, may arrive later than others. If you're waiting for a document, let your tax preparer know so you can determine whether to wait before filing.
Five Tax Concepts Worth Understanding
You don't need to know every tax rule, but a few key concepts can help you understand how income, investments, and retirement decisions affect what you owe. These five are a useful place to start.
1. Marginal and Effective Tax Rates
The federal income tax system uses progressive tax brackets. Different portions of your taxable income are taxed at different rates, rather than taxing all your income at the same rate.
Your marginal tax rate applies to your next dollar of taxable income. Your effective tax rate measures your federal income tax as a percentage of your taxable income.
The distinction matters when evaluating financial decisions. Moving into a higher tax bracket doesn't mean all your income is suddenly taxed at that higher rate. Generally, only the portion of taxable income within the higher bracket is taxed at the higher rate.
Your marginal rate can help you evaluate decisions such as making a deductible retirement contribution, realizing investment gains, or converting money from a traditional IRA to a Roth IRA. Your effective rate gives you a broader view of the tax you're paying on your income.
Both measures are useful, but they answer different questions.
2. Tax Deductions
A tax deduction reduces the amount of income subject to tax. Depending on your circumstances, deductible expenses may include eligible retirement contributions, certain business expenses, student loan interest, and other qualifying costs.
For individual taxpayers, another consideration is whether to take the standard deduction or itemize. Itemizing generally makes sense when your eligible itemized deductions exceed your standard deduction.
A deduction doesn't reduce your tax bill dollar for dollar. Its value depends in part on your tax rate and the rules governing the deduction.
It's also worth considering the financial decision behind the deduction. Spending money solely to obtain a tax benefit rarely makes sense if the expense doesn't otherwise fit your needs.
3. Tax Credits
Tax credits generally reduce your tax liability directly, rather than reducing the amount of income subject to tax.
Depending on your situation, you may qualify for credits related to children and dependents, education, foreign taxes, or other eligible expenses and activities.
Some credits are refundable, meaning they may generate a refund even if the credit exceeds your tax liability. Nonrefundable credits generally can't reduce your tax liability below zero, although specific rules vary.
Eligibility often depends on income, filing status, expenses, and other requirements. Keep the supporting records and confirm that you meet the applicable rules before claiming a credit.
4. Capital Gains and Losses
When you sell an investment or another capital asset, the difference between your adjusted cost basis and your proceeds from the sale generally determines whether you've realized a capital gain or loss.
The IRS taxes that gain or loss based on the asset, how long you owned it, and your individual circumstances.
For many investments, gains on assets held for one year or less are treated as short-term gains and taxed at ordinary income tax rates. Gains on qualifying assets held for more than one year may receive more favorable long-term capital gains tax treatment.
Capital losses can also help manage your tax liability. Realized losses generally offset capital gains, and certain excess losses may be deductible against other income, subject to applicable limits. Unused losses may be carried forward to future tax years.
Selling an investment can create a tax bill even if you reinvest all the proceeds. Before selling, consider the potential tax consequences alongside your investment objectives and the asset's role in your portfolio.
5. Dividends
Dividends are distributions that companies may pay to shareholders. For tax purposes, they're generally classified as qualified or ordinary (nonqualified) dividends.
Qualified dividends may receive long-term capital gains tax treatment if they meet the applicable requirements. Ordinary dividends are generally taxed at ordinary income rates.
The distinction can affect the after-tax income you receive from an investment. Two investments that generate similar cash flow may produce different tax results.
When reviewing your portfolio, consider more than just how much income an investment generates. How that income is taxed, whether you need it for spending, and the investment's role in your overall allocation can all influence whether it makes sense for you.
Tax Planning Strategies to Consider Throughout the Year
The following strategies address decisions you may be able to make before the tax year ends, from adjusting retirement contributions to managing investment gains. Which ones make sense depends on your income, account types, financial goals, and plans for the coming years.
Review Your Retirement Contributions
Start by reviewing how much you contribute to your employer retirement plan and whether you're receiving the full employer match available to you. Depending on your income, eligibility, and goals, you may also want to consider contributions to a traditional or Roth IRA.
Traditional retirement contributions may provide a current tax deduction if you qualify. Roth contributions generally don't provide an upfront deduction, but qualified withdrawals can be tax-free in retirement.
A current deduction isn't always the deciding factor. If you expect your tax rate to be higher in retirement, Roth contributions may deserve a closer look. If a deduction is more valuable today, traditional contributions may be worth considering.
Your eligibility, current cash flow, expected retirement income, and existing retirement assets all shape the right approach.
Evaluate Your Tax Bracket and Potential Roth Conversions
Your current tax bracket can help you evaluate when to recognize income, claim deductions, or convert traditional retirement assets to a Roth IRA.
A Roth conversion generally makes the converted amount taxable in the year of conversion. By paying taxes now, you may benefit from tax-free qualified withdrawals later.
Conversions can be worth evaluating in a year when your income is unusually low, such as a gap between retirement and the start of Social Security or required minimum distributions. However, converting too much in one year could push additional income into higher tax brackets or affect income-based thresholds, including Medicare premiums.
The goal isn't simply to pay taxes at a lower rate this year. It's to evaluate whether paying taxes now could reduce your overall tax burden over time. That requires looking at the conversion amount, available funds to pay the tax, future withdrawals, and other expected income.
Make Charitable Giving More Tax-Efficient
If charitable giving is part of your financial plan, the way you donate can affect your taxes.
Depending on your circumstances, you may want to consider:
Bunching contributions: Combining donations that would otherwise be spread across several years into one tax year may make itemizing more beneficial.
Donor-advised funds: Contributing to a donor-advised fund may allow you to claim an eligible deduction in the contribution year while recommending grants to charities over time, subject to the applicable rules.
Donating appreciated investments: Giving eligible investments directly to charity may provide a deduction and help avoid capital gains tax that could otherwise arise from selling the assets first.
For 2026, eligible taxpayers who take the standard deduction may also deduct certain cash contributions to qualifying charities, up to $1,000 for individual filers or $2,000 for married couples filing jointly. Taxpayers who itemize deductions face a new rule that generally allows a deduction for charitable contributions only to the extent they exceed 0.5% of adjusted gross income. These changes may affect how you time and structure charitable gifts.
If you're age 70½ or older, you may qualify to make a qualified charitable distribution (QCD) directly from an eligible IRA to a qualifying charity. The transfer must meet specific IRS requirements, including rules governing eligible accounts and charitable recipients. When you meet the requirements, the distribution can be excluded from taxable income and may count toward your required minimum distribution. A QCD generally cannot also be claimed as a charitable deduction.
The most suitable approach depends on the assets you're giving, the organizations receiving the gifts, and your tax situation. Review the details before transferring money or investments.
Manage Investment Gains and Losses
Review your taxable investment accounts regularly, especially if you plan to sell investments or expect substantial capital gains.
Tax-loss harvesting involves selling investments at a loss to offset realized capital gains. Depending on the amount of losses and the applicable rules, you may also be able to deduct some losses against other income or carry unused losses forward.
Be aware of the wash-sale rule, which generally disallows a capital loss when you buy substantially identical securities during the 30 days before or after selling an investment at a loss. The rules can also apply to purchases in other accounts, including certain IRA transactions. Review activity across relevant accounts before claiming a loss.
Rebalancing is another opportunity to review tax consequences. If your portfolio has moved away from its intended allocation, consider which assets to sell, where they're held, and whether realized losses can offset gains. Depending on your circumstances, rebalancing within tax-advantaged accounts may also help limit current taxable gains.
A tax benefit alone isn't a reason to sell an investment or hold one you no longer want.
Evaluate potential tax savings alongside the investment's role in your portfolio and the risks of keeping it.
Check Tax-Advantaged Accounts and Required Distributions
Health savings accounts, flexible spending accounts, and retirement plans each have rules that can affect your taxes and the timing of your decisions.
If you have an HSA, review your contributions and eligible medical expenses. HSA funds can receive favorable tax treatment if you meet the applicable requirements. If you have a flexible spending account, check your employer's plan rules for unused funds, carryovers, grace periods, and deadlines.
Retirees and people approaching retirement should also review required minimum distributions (RMDs). The rules depend on your age, account type, whether you're the original account owner, and other factors. Inherited retirement accounts may have different distribution requirements.
Failing to take a required distribution can trigger an excise tax, though relief may be available in certain circumstances. Confirm your obligations well before the end of the year so you have time to address any outstanding distributions.
Review Withholding and Estimated Tax Payments
A significant change in income can leave you with too little tax withheld during the year.
This can happen after you receive a large bonus, sell a business or investment, retire, start self-employment, or change your income sources. Retirement can be especially important because you may shift from a regular paycheck to drawing income from several accounts with different tax treatments.
Review your projected tax liability and consider whether to adjust paycheck or retirement distribution withholding or make estimated payments. Your tax professional can help you evaluate the applicable requirements and reduce the risk of an unexpected balance due or underpayment penalty.
Keep Up With Tax Law Changes
Tax brackets, contribution limits, deductions, credits, and distribution rules can change from year to year. Before making a year-end contribution, Roth conversion, charitable gift, or investment sale, confirm the current requirements and deadlines rather than assuming a strategy that worked last year will have the same result.
Pay particular attention to decisions that affect more than your federal income tax. A change in taxable income may also affect Social Security benefits, Medicare income-related monthly adjustment amounts, or state income taxes. Charitable deduction rules and other tax provisions can also change year to year, so verify the rules that apply before making a year-end decision.
How to Prepare for Tax Season Without Missing Important Details
Before filing, check for missing documents, unusual transactions, and changes that could affect your return.
Use a checklist. Organize records by income, investments, retirement accounts, deductions, credits, and other financial activity.
Compare your records with the previous year. Changes in income, investments, family circumstances, or account activity may require additional documentation.
Watch for corrected forms. If a financial institution issues an updated statement, make sure your tax preparer receives the corrected version.
Document unusual transactions. Keep records of Roth conversions, rollovers, inherited assets, real estate sales, charitable distributions, and other transactions that may require special treatment.
Coordinate with your financial team. Share relevant tax documents and upcoming financial decisions with the professionals who advise you. Consider a planned investment sale, Roth conversion, or charitable gift alongside the rest of your tax situation.
Getting organized early makes it easier to spot missing information and resolve questions before filing your return.
Frequently Asked Questions About Tax Planning and Preparation
1. What documents do I need to file my tax return?
Most taxpayers need records of their income, tax withholding, and any deductions or credits they plan to claim. Depending on your circumstances, these may include W-2s, 1099s, retirement account statements, charitable donation records, mortgage interest statements, and confirmations of estimated tax payments. Business owners, investors, and retirees may need additional documentation.
2. What's the difference between a tax deduction and a tax credit?
A tax deduction reduces the amount of income subject to tax, while a tax credit generally reduces your tax liability directly. A deduction's value depends partly on your tax rate, while a credit's value depends on its amount and applicable rules, including whether it's refundable.
3. Does moving into a higher tax bracket mean all my income is taxed at a higher rate?
No. Federal income tax brackets are progressive, meaning different portions of your taxable income are taxed at different rates. Moving into a higher marginal tax bracket generally affects only the portion of your income within that bracket, not all your income.
4. When should I start year-end tax planning?
Start reviewing your tax situation well before year-end. This gives you time to adjust contributions, evaluate potential investment sales, and consider charitable giving or Roth conversions. Some decisions have earlier deadlines, so confirm the applicable timing with your tax professional.
5. Should I work with a financial advisor and a tax preparer?
The two roles can complement each other. A tax preparer helps you report income accurately and claim applicable deductions and credits. A financial advisor can help you evaluate how tax considerations affect investment decisions, retirement income, charitable giving, and your long-term financial plan. Coordinating these perspectives can be especially useful when you're approaching retirement, selling investments, or considering a Roth conversion.
Bring Your Tax Strategy Into Focus
Tax decisions rarely happen in isolation. A Roth conversion can increase your taxable income, an investment sale can create capital gains, and a charitable gift can change your deductions or taxable income. The important question is how those decisions fit together, both this year and over time.
At Holzberg Wealth Management, we help individuals and families in Marin County, the greater San Francisco Bay Area, and nationwide evaluate tax considerations alongside investment management, retirement planning, and other financial priorities. As fee-only fiduciaries, we work in your best interest and help you understand how financial decisions may affect your overall plan.
If you'd like help coordinating these decisions, you can schedule an introductory call with Holzberg Wealth Management.
** This writing is for informational purposes only. The author and Holzberg Wealth Management do not guarantee or otherwise promise any results that may be obtained from using this report. No reader should make any investment decision without first consulting their financial advisor and conducting their own research and due diligence. These commentaries, analyses, opinions, and recommendations represent the personal and subjective views of the author and do not constitute a recommendation, offer, or solicitation to make any securities transaction. The information provided in this report is obtained from sources that the author believes to be reliable. External links to third parties are being provided for informational purposes only. Holzberg Wealth Management is not affiliated with the third-party websites linked to, unless otherwise explicitly stated, and does not constitute an endorsement or approval by Holzberg Wealth Management of any of the third party’s products, services, or opinions. Past performance is not a guarantee of future results. Indices are not available for direct investment; therefore, their performance does not reflect the expenses associated with the management of an actual portfolio. Any charts and graphs provided are hypothetical and for illustrative purposes only, are not indicative of any investment, and assume reinvestment of income and no transaction costs or taxes.
