Tax Preparation 101: From Documents to Filing

Types of Income and Tax Forms

Understanding what types of income you earn — and which tax forms report them — is the foundation of accurate tax filing. Before you can fill out a return, you need to know what goes on it.

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What Counts as Taxable Income?

You can receive income in the form of money, property, or services. Generally, an amount included in your income is taxable unless it is specifically exempted by law, and income that is taxable must be reported on your return and is subject to tax.

Taxable income includes wages, salaries, bonuses, business income, interest, dividends, and rental income — all subject to federal income tax and, depending on the state, may also be subject to state income tax.

Common types of nontaxable income include: Certain types of gifts and inheritances, child support payments, welfare benefits, some Social Security benefits, life insurance proceeds, and specific types of educational scholarships.

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The W-2: Wage and Tax Statement

A W-2 form, officially known as the Wage and Tax Statement, is a document that employers must provide to each employee and file with the IRS and Social Security Administration. It reports the total wages paid to an employee during the year and the taxes withheld from those wages.

Key things reported on your W-2:

• Gross wages earned during the year
• Federal and state income taxes withheld
• Applicable taxes including federal income tax, Social Security tax, and Medicare tax

Because payroll taxes are deducted throughout the year, W-2 employees generally do not need to calculate or submit quarterly estimated tax payments. When filing, you report your W-2 income on Form 1040.

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The 1099 Family: Non-Employee Income

Depending on your money-making activities, you may receive a few different 1099 forms to track your income. Here are the most important ones:

• 1099-NEC (Non-Employee Compensation): Used to report payments made to independent contractors or freelancers. If you paid $600 or more to a contractor during the year, you must issue a 1099-NEC.
• 1099-MISC: Previously used for independent contractor payments, but now used to pay royalties, rent, or payments classified as other income.
• 1099-INT / 1099-DIV: Reports interest and dividend income. Interest payments may come from investments or a savings account; you must report any interest payments over $10 to the IRS, and they are taxed as ordinary income.
• 1099-K: Used for payments via settlement entities (like PayPal) to record your business transactions for the year.

Critical difference from a W-2: Taxes are not usually withheld by the payer for 1099 forms. As a freelancer, you're responsible for estimating your taxes and paying the self-employment tax in addition to your income tax — typically making payments quarterly based on your estimated annual tax liability.

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Self-Employment & Other Income Types

The total self-employment tax for 2024 is 15.3%, which includes the 12.4% Social Security tax plus 2.9% in Medicare taxes. This is because self-employed individuals pay both the employer and employee portions.

Income from a 1099-NEC is reported on Schedule C (Profit or Loss from Business) and may require filing Schedule SE (Self-Employment Tax).

For rental income: Rental income is income you earn from renting out residential or commercial properties. Charging rent means you are required to pay income tax on what you collect after applicable deductions. The IRS considers rental income to be ordinary income for taxation purposes.

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What If You Have Multiple Income Types?

Many people receive both a W-2 and 1099 forms in the same tax year. Combining these forms ensures you accurately report all your income and deductions. Most importantly, you're required to report all of your income on your tax return, even if you do not receive a 1099 or W-2 form.

Gathering and Tracking Tax Documents

Getting your tax documents organized before you sit down to file is one of the most important steps in the entire tax preparation process. Keeping the documents and tax forms you need to file your taxes in one place allows you to prepare an accurate return, claim deductions or credits, and avoid errors that could delay your refund.

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Why Organization Matters

Whether you prepare your own return or work with a CPA, having your personal tax records properly sorted can save time, reduce errors, and help ensure nothing gets overlooked. There are often two types of tax filers: those who neatly file their tax information in preparation for tax season and those who scramble to gather all their forms at the last minute — and many of us find ourselves in the latter category.

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Key Documents You Need to Gather

Taxpayers should have all necessary records handy, such as W-2s, 1099s, receipts, canceled checks, and other documents that support any income, deductions, or credits reported on their tax return.

Income Documents:

• Form W-2 – A W-2 states your wages and withheld taxes, providing a complete summary of your income for the last year. Your employer should send you a W-2 prior to January 31.
• Form 1099 – Various 1099 forms, including 1099-NEC, 1099-MISC, and 1099-K, are used to report payments that typically don't come from an employer — such as if you work as an independent contractor, gig worker, or self-employed person, or if you receive income such as interest, dividends, prize winnings, or rents.
• Multiple jobs – If you had several jobs, get a W-2 from each employer before filing. Different 1099 forms report income that isn't wages, and missing them can cause IRS letters later.

Personal & Supporting Documents:

• Social Security number or individual tax ID number (ITIN) for you and anyone else on your return, bank account and routing numbers for direct deposit, and your adjusted gross income (AGI) from last year's return.
• If available, your last two years of tax returns will help your tax preparer understand your tax history. You should also gather your routing and bank account numbers for direct deposit purposes.

Deduction & Credit Documents:

• Receipts for charitable donations, medical expenses, and mortgage interest
• For charitable gifts of $250 or more, a written acknowledgment from the charitable organization is required, showing the amount donated and whether goods or services were given in return.

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How to Track and Organize Your Documents

1. Start Early and Use a Checklist The key to staying organized during tax season is to start early. Many people procrastinate, which can lead to a last-minute rush and potential mistakes. Make a plan to gather and organize your tax documents at least a few weeks before the filing deadline.

2. Designate One Location Choose one physical folder, envelope, binder, or digital folder and commit to putting everything tax-related in that location — including W-2s, 1099s, receipts, and even financial documents you're unsure about. If you only do one thing to prepare for tax season, make it this one.

3. Categorize Your Documents Entering information is much easier if you separate your income, deductions, and tax credits. Depending on the complexity of your return, you may want to use file folders, paper clips, boxes, or other methods to categorize documents.

4. Go Digital The easiest way to keep your tax records is to digitize important documents as PDFs. Digital files can't burn down, get wet, or be lost. Name each file clearly (e.g., "2024-W2-EmployerName.pdf") and save a backup both locally and in the cloud.

5. Use Last Year's Return as a Guide Your previous year's tax return can serve as a helpful guide for organizing your documents for the current year. Reviewing it can also remind you of any deductions or credits you may have forgotten about.

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Know Your Deadlines

Missing document deadlines can cascade into filing problems. The IRS requires all employers to send you a W-2 no later than January 31 following the close of the tax year. Most common tax forms are sent out by late January, so if you're missing a W-2 or 1099 in mid-February, track it down. The consequences of missing a deadline can include late fees, interest charges, and even penalties, so mark all relevant deadlines on your calendar and take action early.

Standard and Itemized Deductions

What Is a Tax Deduction?

A deduction reduces the amount of a taxpayer's income that's subject to tax, generally reducing the amount of tax the individual may have to pay. When you file your federal return, you face one of the most impactful choices in tax preparation: you can claim a standard deduction — a set amount available to all eligible taxpayers — or you can itemize your eligible expenses and deduct that total instead. Both deduction types reduce your taxable income and how much you owe the government in taxes, but you can only use one deduction option each year.

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The Standard Deduction

The standard deduction is a fixed amount that most taxpayers can subtract from their income to reduce taxable income. It varies by filing status and is adjusted annually for inflation.

2024 Standard Deduction Amounts:

For the 2024 tax year, the standard deduction is $29,200 for married taxpayers filing jointly and $14,600 for single taxpayers and married taxpayers filing separately. The head of household amount is $21,900.

• The standard deduction consists of the sum of the basic standard deduction and any additional standard deduction amounts for age and/or blindness.
• The standard deduction simplifies tax preparation because you don't need to track individual deductible expenses.
• More than 90% of taxpayers opt for the standard deduction, according to IRS data.

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Itemized Deductions

Itemized deductions are specific, IRS-approved expenses that decrease your taxable income. They require you to track and document costs like medical care, state taxes, and charitable gifts instead of taking a flat-rate standard deduction.

Common itemized deductions include:

• Mortgage interest paid on a qualified primary or secondary home
• State and local taxes (SALT), such as state and local income taxes (or sales taxes) and property taxes (subject to IRS limits)
• Charitable contributions made to qualified organizations
• Medical and dental expenses that exceed a percentage of your adjusted gross income
• Casualty or theft losses related to a federally declared disaster
• Investment interest expense on money borrowed to invest

Key Limits on Itemized Deductions:

• Medical expenses: You can only deduct the portion that exceeds 7.5% of your adjusted gross income (AGI). This includes doctor visits, hospital care, dental treatments, and certain insurance premiums.
• SALT cap: The total deduction for state and local income, property, or sales taxes is capped at $10,000 ($5,000 if married filing separately) for 2024.
• Mortgage interest: The home mortgage interest deduction only applies to the first $750,000 of your mortgage debt for homes purchased after December 15, 2017.

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How to Decide: Standard vs. Itemized

It's wise to add up all the expenses you plan to itemize and then compare the total to the standard deduction amounts for the filing season.

• Choose the standard deduction if your qualifying expenses fall below the threshold for your filing status — it's faster, simpler, and requires no documentation.
• Choose itemized deductions if your total eligible expenses exceed the standard deduction amount. Itemizing might make sense if you paid a lot in mortgage interest or had high unreimbursed medical expenses.

Taxpayers use Schedule A (Form 1040) to figure their itemized deductions. Schedule A is divided into seven sections: medical and dental expenses, taxes you paid, interest you paid, gifts to charity, casualty and theft losses, other itemized deductions, and a section for your total itemized deductions.

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Record-Keeping Tips

• Itemizing requires you to keep receipts throughout the year and store them after filing in case of an IRS audit.
• You should hold onto receipts for 3 years, which is generally as far back as the IRS would audit past returns.
• You can change your deduction choice every year. If you take the standard deduction this year, you can still itemize next year if that leads to a better result.

Common Deductions and Tax Credits

Understanding deductions and credits is one of the most powerful skills in tax preparation. They can significantly reduce what you owe — or even put money back in your pocket. But they work in very different ways, so let's break them down clearly.

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Deductions vs. Credits: What's the Difference?

These two terms are often confused, but the distinction matters enormously:

• Tax Deduction: A deduction is an amount you subtract from your income when you file, so you don't pay tax on it. By lowering your income, deductions lower your tax.
• Tax Credit: Tax credits directly reduce what you owe, while tax deductions decrease your taxable income. As a result, tax credits are generally more valuable, but less common than deductions.

A simple example: If you're in the 22% tax bracket and claim a $1,000 deduction, you save $220. But a $1,000 tax credit saves you the full $1,000 — dollar for dollar.

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Standard Deduction vs. Itemizing

Before claiming specific deductions, every filer must choose one of two methods:

The Standard Deduction

The standard deduction lowers your income by one fixed amount. On the other hand, itemized deductions are made up of a list of eligible expenses. You can claim whichever deduction reduces your tax bill the most — you are not allowed to claim both.

The standard deduction for 2025 is: $15,750 for single or married filing separately; $31,500 for married couples filing jointly or qualifying surviving spouse; $23,625 for head of household.

Since the standard deduction is so high, about 90% of filers use the standard deduction vs. itemizing, according to the IRS.

When to Itemize

The average taxpayer will likely be best served by choosing the standard deduction. However, if you give significant amounts of money to charity, face high SALT taxes, and/or have high interest expenses like mortgage interest, itemizing on Schedule A may lower your tax burden more.

Common itemized deductions include:

• Mortgage interest on your primary or secondary home
• State and local taxes (SALT): If you choose to itemize for tax year 2025, you can deduct up to $40,000 in state and local taxes.
• Medical expenses: Taxpayers can deduct unreimbursed medical expenses that exceed 7.5% of their AGI.
• Charitable contributions to qualified nonprofits

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Common Tax Deductions

Deduction	Key Detail
Student Loan Interest	Up to $2,500 per year; an "above the line" deduction you can take without itemizing.
Traditional IRA Contributions	You can contribute $7,000 in 2025 and deduct that amount from your income (income limits apply).
401(k) Contributions	If your employer offers a 401(k), it pays to maximize your contributions. The maximum contribution is $23,500 for 2025.
HSA Contributions	If you have a qualified Health Savings Account (HSA), you can deduct contributions. For 2025, the contribution limit is $4,300 for singles and $8,550 for families.

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Common Tax Credits

Credits come in two key types:

• Non-refundable credits can reduce your tax bill to zero, but never below that point — leftover credit value is lost.
• Refundable credits can reduce your bill to zero and convert leftover money into a tax refund.

Key credits to know:

• Child Tax Credit (CTC): For 2025, this could mean $2,200 per child under 17 if your modified adjusted gross income is under $400,000 (filing jointly) or $200,000 (other filing statuses).
• Earned Income Tax Credit (EITC): A refundable tax break for low-income taxpayers. For 2025, the credit ranges from $649 to $8,046, depending on how many kids you have, your marital status, and how much you made.
• American Opportunity Tax Credit (AOTC): Runs up to $2,500 per student for tuition, activity fees, books, and supplies during the first four years of college. It is partially refundable — if the credit lowers your tax bill to $0, you can get up to 40% (limited to $1,000) back as a refund.
• Child & Dependent Care Credit: Covers childcare expenses while you work or look for work. For 2025, it applies to 20%–35% of up to $3,000 for one qualifying dependent and up to $6,000 for two or more.

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Key Takeaway

Always compare your potential itemized deductions against your standard deduction before filing. People should understand which credits and deductions they can claim and the records they need to show their eligibility. Good record-keeping throughout the year is the foundation of maximizing your tax savings.