If you live in Daly City, San Francisco, or San Mateo County, opening your mailbox to find a letter from the Internal Revenue Service (IRS) regarding an IRS Audit or the California Franchise Tax Board (FTB) is enough to ruin your week. The word “audit” brings up images of interrogation rooms and endless paperwork. But here is the truth: audits are not personal attacks; they are usually triggered by specific discrepancies in your tax return. Understanding the reasons behind an IRS Audit is crucial.
At Izella Tax Relief, we understand that behind every tax file is a human being trying to build a life. We know the anxiety that comes with tax problems, and we are here to tell you: Don’t panic. Prepare.
Preparing for an IRS Audit can alleviate some of the stress associated with the process. Knowledge is power when it comes to navigating these challenges.

Whether you are a tech contractor in Alameda, a small business owner in Daly City, or a freelancer in San Francisco, understanding why audits happen is the first step to preventing them. Here are the 7 most common reasons taxpayers get flagged—and how you can protect yourself.
Knowing what triggers an IRS Audit can help you be proactive in avoiding one.
In today’s financial landscape, understanding the IRS Audit process is more important than ever.
Understanding the implications of an IRS Audit can significantly reduce stress and prepare you for any future inquiries.
A common reason for an IRS Audit is simple math errors, which can lead to complications in your tax filing.
1. Math Errors
Forgetting to report all income can trigger an IRS Audit, as the agency will compare your report with other income documents.
It sounds too simple to be true, but simple arithmetic mistakes are a leading cause of IRS attention. In the age of e-filing, software catches many of these, but if you are filing on paper or manually entering data from a W-2, a misplaced decimal point can trigger a red flag.
Disproportionately high charitable donations could draw attention and potentially lead to an IRS Audit.
2. Unreported Income
The IRS receives copies of all your W-2s and 1099s. If your tax return doesn’t match what the IRS has in their system—even if you just forgot a small dividend payment or a freelance gig—their computers will automatically flag your return. In the Bay Area’s gig economy, missing a 1099 form is incredibly common, but the IRS views it as underreporting income.
3. Excessive Charitable Donations
Many people are filing for home office deductions, and this area is increasingly scrutinized during an IRS Audit.
We encourage generosity, but if your charitable deductions are disproportionately high compared to your income, the IRS may take a closer look. For example, if you earn $60,000 a year but claim $20,000 in charitable donations, it looks suspicious. Always keep receipts and bank records for every single donation.
Rounding numbers can create an impression of inaccuracy and may result in an IRS Audit.
4. “Hobby” Losses on Schedule C
More taxpayers are facing scrutiny from the IRS regarding foreign assets and cryptocurrencies, leading to an IRS Audit.
Many creative professionals in San Mateo County and San Francisco have side hustles. However, if your business claims a loss year after year, the IRS may classify it as a “hobby” rather than a business. To claim business losses, you generally need to show a profit in at least three out of five tax years.
Understanding the common triggers can help you avoid an IRS Audit and keep your finances in check.
5. The Home Office Deduction
Since the shift to remote work, more Californians are claiming the home office deduction. While legitimate, this deduction has historically been a high-audit area. You can only claim this if you use a specific part of your home exclusively and regularly for business. Using your dining room table doesn’t count if you also eat dinner there!
6. Rounding Numbers
Real life rarely happens in round numbers. If your expense report lists $1,000 for travel, $500 for advertising, and $200 for supplies, it looks like an estimate rather than a record. Accurate returns have cents (e.g., $1,042.15). Rounding everything to the nearest hundred suggests you are guessing rather than calculating.
7. Foreign Assets and Crypto
Be aware that audits are often automated processes initiated by the IRS, so keeping accurate records is essential to avoid an IRS Audit.
It’s important to understand that the IRS Audit process can be daunting, but knowledge makes it manageable.
Remember, an IRS Audit does not always indicate wrongdoing; it can simply be a request for clarification.
We can assist with both IRS Audit matters and California State (FTB) issues that may arise.
The IRS is aggressively cracking down on unreported offshore accounts and cryptocurrency. If you trade crypto or have family assets overseas, you must disclose them. Failure to report foreign accounts can lead to severe penalties, far worse than a standard audit.

Key Takeaways
- Audits are often automated: Most audits are triggered by simple data mismatches (like a missing W-2) rather than a personal investigation.
- Details matter: Rounding numbers or estimating expenses on your tax return is a major red flag for the IRS.
- Geography doesn’t exempt you: Whether you are in Daly City or Alameda, the IRS and California FTB apply the same scrutiny to high deductions and unreported income.
- Representation is key: You do not have to speak to the IRS yourself. A tax professional can handle all communication and defend your rights.
Frequently Asked Questions (FAQs)
Q: How far back can the IRS audit me? A: Generally, the IRS can audit returns filed within the last three years. However, if they identify a substantial error (like omitting more than 25% of your income), they can go back six years. This is why we recommend keeping all your records in San Mateo or SF safe for at least seven years.
Q: Does an audit mean I am in trouble? A: Not necessarily. An audit simply means the IRS needs to verify information. In many cases, it is a simple request for proof of a deduction (like a receipt for a charitable donation). However, ignoring the letter will lead to trouble.
Q: Can you help with California State (FTB) audits too? A: Absolutely. Dealing with the California Franchise Tax Board (FTB) can sometimes be more aggressive than the IRS. Izella Tax Relief helps clients in the Bay Area resolve issues with both federal and state tax agencies.
Q: Do I have to go to the IRS office in person? A: Most audits are “correspondence audits,” meaning they are handled entirely by mail. If an in-person field audit is requested, Izella Tax Relief can go in your place. We ensure you never have to face an auditor alone.

How Izella Tax Relief Can Help
If you have received an audit notice, or if you owe back taxes to the IRS or the State of California, you do not have to face them alone.
At Izella Tax Relief, we specialize in standing between you and the tax authorities. We serve clients across Daly City, Alameda, and the greater Bay Area, providing compassionate, non-judgmental help.
- We Speak IRS: We handle all communication so you never have to speak to an auditor.
- Audit Representation: We defend your return and ensure your rights are protected.
- Resolution: Whether it’s an Offer in Compromise, an Installment Agreement, or removing a levy, we find the solution that fits your life.
Ready for peace of mind? Don’t let tax stress control your life. Contact Izella Tax Relief today for a consultation. We are your local experts in Daly City and San Francisco, ready to turn your tax nightmare into a manageable plan.


