Finance

Tax Filing

Navigate tax season without the stress or the accountant bill

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Overview

What tax filing involves

Tax filing is the process of reporting your income, calculating your tax liability, claiming deductions and credits, and submitting the required forms to the IRS and your state tax authority. For W-2 employees with straightforward finances, this means gathering your income documents, choosing between the standard and itemized deduction, completing Form 1040, and submitting by the April deadline. For freelancers, small business owners, and people with investment income, the process is significantly more complex.

The average American spends 13 hours preparing their tax return, according to the IRS National Taxpayer Advocate. For small business owners and freelancers, that number jumps to 20-40 hours. The complexity of the U.S. tax code - over 10,000 pages of statutes plus thousands of pages of regulations - means that even simple tax situations involve dozens of rules and exceptions.

Professional tax preparation costs range from $220 for a basic W-2 return to $530 for itemized returns, according to the National Society of Accountants. Self-employed individuals pay $400 to $800 on average for Schedule C preparation. Complex returns with investments, rental income, and business entities can cost $1,000 to $3,000 or more. CPA hourly rates typically range from $150 to $400 per hour depending on location and specialization.

Related task guides: budget planning and contract review.

Why it matters

Why most people need help

The U.S. tax system is built on self-assessment, meaning the burden of correctly calculating your taxes falls entirely on you. The IRS estimates that taxpayers overpay by approximately $1 billion annually simply by choosing the standard deduction when itemizing would save them more. Conversely, claiming deductions you are not entitled to can trigger audits, penalties, and interest charges. The penalty for underpayment alone is currently around 8% annually on the unpaid amount.

Tax law changes frequently, with major revisions in 2017 (Tax Cuts and Jobs Act), 2020-2021 (COVID relief provisions), and ongoing annual adjustments to brackets, standard deductions, and credit amounts. Many provisions from the 2017 tax reform are set to expire or change after 2025, creating significant uncertainty. Freelancers and gig workers face additional complexity with quarterly estimated payments, self-employment tax calculations, and business expense tracking that most people are never taught how to handle.

For more guidance, explore our copilot directory, browse industry guides, or see how we compare to ChatGPT. Check out our audience guides for role-specific advice. See our freelance tax scenario for a real-world example.

The walkthrough

Step-by-step with Copilotly

A chapter-numbered playbook for tax filing. Each step pairs the human work with the copilot that automates the hard parts.

Gather all income documents

Collect every document reporting income you received during the tax year. This includes W-2s from employers, 1099-NEC and 1099-MISC for freelance and contract work, 1099-INT and 1099-DIV for investment income, 1099-B for stock sales, 1099-G for unemployment benefits, 1099-R for retirement distributions, and 1099-K for payment platform transactions. You should receive most of these by January 31.

Copilot help: Copilotly's Tax copilot provides a personalized checklist of documents you need based on your income sources. It explains what each form reports and flags if any expected documents are missing based on your financial profile.

⏱ January-February

Determine your filing status and dependents

Choose the filing status that gives you the most favorable tax treatment. If you are married, compare married filing jointly versus separately to see which saves more. If you are unmarried but support a child or dependent, you may qualify for head of household status. Identify all qualifying dependents, including children, elderly parents, and other relatives you support financially.

Copilot help: The Tax copilot walks you through the IRS qualification criteria for each filing status and calculates your estimated tax under each option. It also checks dependent eligibility using the IRS support test, relationship test, and residency test.

⏱ February

Calculate your adjusted gross income

Add up all income from every source and apply above-the-line deductions to arrive at your adjusted gross income (AGI). Above-the-line deductions include contributions to traditional IRAs, student loan interest payments, HSA contributions, self-employment tax adjustment, and educator expenses. Your AGI determines eligibility for many credits and deductions.

Copilot help: Copilotly calculates your AGI automatically from the income documents and deductions you provide. It identifies above-the-line deductions you might be missing and shows how each one affects your AGI and downstream eligibility for credits.

⏱ February-March

Decide between standard and itemized deductions

Compare the standard deduction for your filing status ($15,700 for single, $31,400 for married filing jointly in 2025) against your total itemized deductions. Itemized deductions include state and local taxes (capped at $10,000), mortgage interest, charitable contributions, and medical expenses exceeding 7.5% of AGI. Choose whichever amount is larger.

Copilot help: The Tax copilot runs a side-by-side comparison showing your standard deduction versus your itemized total. It identifies deductible expenses you may have overlooked and recommends the option that minimizes your tax bill.

⏱ March

Claim all eligible tax credits

Review your eligibility for tax credits, which directly reduce your tax bill dollar for dollar. Major credits include the Child Tax Credit (up to $2,000 per child), Earned Income Tax Credit (up to $7,830 for 2025), American Opportunity and Lifetime Learning education credits, Child and Dependent Care Credit, and the Saver's Credit for retirement contributions. Some credits are refundable, meaning you receive them even if you owe no tax.

Copilot help: Copilotly screens you for every federal and state tax credit based on your income, family size, and expenses. It calculates the credit amount you qualify for and identifies credits you may not have known about, like the Saver's Credit or energy efficiency credits.

⏱ March

Handle self-employment and business income

If you earned freelance, gig, or business income, complete Schedule C to report revenue and deductions. Calculate self-employment tax (15.3% on net earnings up to the Social Security wage base, plus 2.9% Medicare on all net earnings). Deductible business expenses include home office costs, equipment, software, professional development, mileage, and health insurance premiums for the self-employed.

Copilot help: The Tax copilot and Bookkeeping copilot work together to categorize your business expenses, calculate your home office deduction using both the simplified and actual expense methods, and determine your self-employment tax. It also calculates next year's estimated quarterly payments.

⏱ March

Review your return for errors and optimization

Before filing, review every line of your return for mathematical errors, missing income, and missed deductions. The IRS flags returns with discrepancies between reported income and the W-2s and 1099s it has on file. Check that Social Security numbers are correct, names match IRS records, and bank account information for direct deposit is accurate.

Copilot help: Copilotly performs a comprehensive pre-filing review, checking for common errors, inconsistencies, and audit triggers. It compares your return against IRS data matching rules and flags anything that could delay your refund or trigger additional scrutiny.

⏱ March-April

File your return and plan for next year

Submit your return electronically for the fastest processing and refund (typically 21 days for e-filed returns versus 6-8 weeks for paper). If you owe taxes, you can pay electronically or set up a payment plan. After filing, set up a system to track deductible expenses throughout the year and calculate estimated quarterly payments if required for next year.

Copilot help: Copilotly provides filing instructions for your specific situation, helps you set up estimated payment schedules for the coming year, and creates a personalized tax planning checklist. It also estimates next year's tax liability based on projected income changes. Read our [related guide](/blog/401k-vs-roth-401k-complete-guide-2026) for more detail.

⏱ April 15 deadline

Watch out

Costly mistakes to avoid

Missing the quarterly estimated tax deadline: Freelancers and self-employed individuals must pay estimated taxes four times per year (April 15, June 15, September 15, January 15). Missing these deadlines triggers underpayment penalties even if you pay your full balance by April 15. The penalty rate is currently tied to the federal short-term rate plus 3 percentage points.

Overlooking above-the-line deductions: Many taxpayers who take the standard deduction do not realize that certain deductions - like student loan interest (up to $2,500), HSA contributions, and self-employment tax adjustments - reduce your adjusted gross income regardless of whether you itemize. These 'above-the-line' deductions are available to everyone.

Confusing tax deductions with tax credits: A $1,000 deduction reduces your taxable income by $1,000, saving you $220 to $370 depending on your bracket. A $1,000 credit reduces your actual tax bill by $1,000. Credits are far more valuable, and many people miss credits they qualify for, including the Earned Income Tax Credit, Saver's Credit, and education credits.

Not tracking business expenses throughout the year: Waiting until tax season to reconstruct a year of business expenses guarantees you will miss deductions. The IRS requires contemporaneous records for business expense deductions, meaning you need receipts and records from when the expense occurred, not reconstructed estimates months later.

Filing with the wrong status: Your filing status (single, married filing jointly, married filing separately, head of household, qualifying widow/widower) significantly affects your tax brackets, standard deduction amount, and eligibility for credits. Head of household status, for example, provides a larger standard deduction and more favorable brackets than single status, but many qualifying individuals file as single instead.

Your toolkit

Recommended copilots

Hand-picked AI copilots that specialize in tax filing. Each one is trained on domain best practices and current regulations.

★ Primary

Tax Copilot

Your primary tax filing assistant. Handles all aspects of federal and state tax preparation including income reporting, deduction optimization, credit eligibility, and filing status selection.

Open copilot →

Bookkeeping Copilot

Essential for tracking and categorizing business expenses throughout the year. Maintains organized records that make tax preparation faster and ensure you do not miss deductible expenses.

Open copilot →

Business Finance Copilot

Helps self-employed individuals and small business owners with financial decisions that have tax implications, including entity selection, retirement plan contributions, and equipment purchases.

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Finance Copilot

Provides broader financial context for tax decisions, including investment tax planning, retirement account strategies, and understanding how tax changes affect your overall financial plan.

Open copilot →

In action

A real Copilotly conversation

Here is a glimpse of how a tax filing session flows when you bring the copilot into the loop.

Context: A freelance graphic designer is filing taxes for the first time as a self-employed individual and is unsure about estimated payments and deductions.

I started freelancing full-time in March 2025 and earned about $72,000 for the year. I worked from home and had various expenses. I've never filed as self-employed before. What do I need to know?

Tax Copilot

Congratulations on your first year of full-time freelancing. There are several important things to understand about self-employment taxes that differ from W-2 employment. First, your tax obligations are different now. As a freelancer, you owe both income tax AND self-employment tax. Self-employment tax covers Social Security and Medicare - the portions that your employer used to pay. The SE tax rate is 15.3% on your first $168,600 of net earnings (2025 limit), plus 2.9% Medicare tax on everything above that. For your $72,000 in gross income, let us estimate your tax situation: Step 1 - Calculate net self-employment income: - Gross income: $72,000 - Estimated deductible expenses (we will itemize these): approximately $12,000-$18,000 - Net SE income estimate: $54,000-$60,000 Step 2 - Self-employment tax: - SE tax on $57,000 (midpoint estimate): approximately $8,050 - You can deduct half of this ($4,025) as an above-the-line deduction Step 3 - Income tax: - AGI after SE deduction: approximately $52,975 - After standard deduction ($15,700 single): taxable income of $37,275 - Federal income tax: approximately $4,250 Total estimated tax: approximately $12,300 Now, the critical issue: you should have been making quarterly estimated payments. Since you started in March, you missed the June and September deadlines. You will owe an underpayment penalty, but we can minimize it. Let me help you identify your deductible business expenses. Common deductions for freelance designers include: - Home office (dedicated workspace square footage) - Computer, monitor, tablet, and design equipment - Software subscriptions (Adobe Creative Cloud, Figma, etc.) - Internet and phone (business use percentage) - Professional development and courses - Marketing and portfolio website costs - Business insurance - Office supplies and furniture Shall we go through each category to maximize your deductions?

Yes, let's go through the deductions. Also, I use one bedroom as my dedicated office - it's about 150 square feet out of my 1,200 square foot apartment. My rent is $1,800/month.

Tax Copilot

Great, let us calculate your home office deduction both ways so you can take the better option. Method 1 - Simplified method: - $5 per square foot, maximum 300 square feet - 150 sq ft x $5 = $750 deduction - Very easy, no detailed records needed Method 2 - Actual expense method: - Your office is 150/1,200 = 12.5% of your apartment - Monthly rent: $1,800 x 12 = $21,600 - Estimated utilities (electric, gas, internet): approximately $3,600/year - Renter's insurance: approximately $200/year - Total housing costs: approximately $25,400 - Business portion (12.5%): $3,175 deduction The actual expense method saves you $2,425 more than the simplified method. Since you started freelancing in March, you can only claim 10 months (March through December), bringing the actual expense deduction to approximately $2,646. Still significantly better than the $625 simplified amount for 10 months. Important requirement: Your home office must be used regularly and exclusively for business. That means no personal use of that room - no guest bedroom, no gaming setup. The IRS is strict about this. For the actual expense method, you will need: - 12 months of rent payments (or 10 months if prorating) - Utility bills for the year - Renter's insurance documentation Now let us estimate your other deductions. Tell me about: 1. What design software do you subscribe to? 2. Did you buy any equipment (computer, tablet, monitor)? 3. Do you drive to meet clients? 4. Any courses, conferences, or professional memberships? Also, for next year, you absolutely need to set up quarterly estimated payments. Based on your 2025 income, I can calculate your 2026 quarterly amounts right now to avoid any penalties next year.

Cost vs benefit

What you would pay elsewhere

Traditional path

$220-$3,000

A CPA or tax preparer charges $220 for a basic W-2 return, $400 to $800 for self-employed returns, and $1,000 to $3,000 for complex returns with investments, rental properties, or business entities. This does not include additional fees for amended returns, tax planning consultations, or audit representation.

With Copilotly

$29/month

Year-round tax guidance including return preparation help, deduction identification, estimated payment calculations, tax planning, and audit preparation. Covers federal and state taxes for any filing status or income type.

Net you save: $200-$2,500 per year

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FAQ

Frequently asked questions

When are taxes due and can I get an extension?

Federal taxes are due April 15, 2026 for the 2025 tax year. You can file Form 4868 for an automatic 6-month extension until October 15, but this only extends the filing deadline, not the payment deadline. You must still estimate and pay any taxes owed by April 15 to avoid penalties and interest. Estimated quarterly payments for self-employed individuals are due April 15, June 15, September 15, and January 15.

Should I take the standard deduction or itemize?

Take whichever amount is larger. For 2025, the standard deduction is $15,700 for single filers and $31,400 for married filing jointly. You should itemize if your total deductible expenses (state and local taxes up to $10,000, mortgage interest, charitable donations, and medical expenses above 7.5% of AGI) exceed the standard deduction. About 87% of taxpayers take the standard deduction since the 2017 tax reform nearly doubled it.

What happens if I cannot pay my full tax bill by April 15?

File your return on time even if you cannot pay. The failure-to-file penalty (5% per month, up to 25%) is ten times higher than the failure-to-pay penalty (0.5% per month, up to 25%). You can apply for an IRS installment agreement online for balances under $50,000, which allows monthly payments over up to 72 months. The IRS also offers 'currently not collectible' status and offers in compromise for taxpayers in financial hardship.

Do I need to pay estimated quarterly taxes?

You need to make quarterly estimated payments if you expect to owe $1,000 or more in taxes after subtracting withholding and credits. This typically applies to freelancers, self-employed individuals, landlords, and people with significant investment income. To avoid penalties, pay at least 90% of your current year tax or 100% of your prior year tax (110% if your AGI was over $150,000) through withholding and estimated payments.

What triggers an IRS audit?

The IRS audits less than 0.5% of individual returns, but certain factors increase your odds. High audit triggers include: reporting significantly different income than what appears on your W-2s and 1099s, claiming a home office deduction, reporting business losses for multiple consecutive years, claiming large charitable donations relative to income, earning over $200,000, and dealing in cash-intensive businesses. Accurate reporting with documentation is your best protection.

How long should I keep my tax records?

Keep your tax returns and supporting documents for at least 3 years from the filing date, which is the standard IRS audit window. If you underreported income by more than 25%, the IRS has 6 years. There is no time limit for fraud or failure to file. For property records, keep documents until 3 years after you sell or dispose of the property. Many tax advisors recommend keeping returns indefinitely and supporting documents for 7 years.

Can I deduct my home office if I work remotely for an employer?

If you are a W-2 employee, you cannot deduct home office expenses on your federal return under current tax law (this changed with the 2017 tax reform). However, some states like New York and California still allow employee home office deductions on state returns. If you are self-employed or an independent contractor, you can deduct home office expenses using either the simplified method ($5 per square foot, up to 300 sq ft) or the actual expense method.

What is the difference between a 1099-NEC and a 1099-K?

A 1099-NEC reports payments of $600 or more made directly from a client to you for services. A 1099-K reports payments processed through third-party platforms like PayPal, Stripe, Venmo, or Upwork. Starting in 2024, the 1099-K threshold dropped to $5,000 in aggregate transactions. If you receive both for the same income, you do not report it twice - the income is the same, just reported through different channels. Track your income carefully to avoid double-counting.

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Tax Filing

What tax filing involves

Why most people need help