Sebastian's Tax Service

Sebastian's Tax Service Experts in IRS audits and representation as well as tax preparation. I specialize in taxation for individuals, small businesses and the trucking industry.

I graduated from Rio Hondo College Whittier, CA with a two year (AA) Associates Degree in Business Administration in 1983 and received a football scholarship to University of Iowa and earned a (BBA) Bachelors of Business Administration in 1987 with emphasis in advanced studies in (BAIS) Business Analytics and Information Systems, to use advanced mathematical and computation techniques to solve bus

iness problems. In 1987 "Beginning with a general review of business management practices, progressing through transportation and supply chain management, and on to a comprehensive study of international logistics, I learned what I needed to know. It was a matter of translating an existing skill set and expanding my understanding into a viable credential that could be used to prove my knowledge." I also possessed a Class A license with all endorsements as well as a Home Land security clearance. I am an Enrolled Agent (EA) I’ve earned the privilege to represent clients before the Internal Revenue Service. I am also a member of the National Association of Enrolled Agents, California Society of Enrolled Agents, and the Orange County Society of Enrolled Agents, as well as the Public Information and Awareness Chairmen for the Orange County Chapter. I am currently working on my Fellowship through the National Tax Practice Institute with emphasis in all levels of representation and practice before the IRS. Including all levels of IRS representation. My goal is to provide the most professional, responsive, and proactive service for my clients, my approach involves tax consultation, financial planning throughout the year to minimize their tax liability, unlike other firms. I work directly with my clients as I prepare the tax return while a computer screen is directed towards them. When completed. I explain, and advise the return, so there educated, and inform them of tax laws, tax strategies, and tax changes that will affect their financial goal. Additionally, I work with my business clients in taxation advisory capacity to help them make financially sound choices and run their businesses efficiently.

Received A Letter From The IRS? Here's What A Senior Enrolled Agent Wants You To KnowYou open your mailbox. Mixed in wit...
05/30/2026

Received A Letter From The IRS? Here's What A Senior Enrolled Agent Wants You To Know

You open your mailbox. Mixed in with the usual bills, pizza coupons, and junk mail is a crisp, white envelope. Your eyes lock onto the return address: Internal Revenue Service.

For most people, that moment triggers an instant stomach drop. Your mind goes straight to a worst-case audit scenario. Or, you convince yourself it is just a mistake, slide it under a stack of papers, and promise to deal with it "later."

As a Senior Enrolled Agent, let me let you in on a secret: the IRS rarely writes just to say hello. But here is the good news—ripping open that envelope does not mean you are automatically being audited, and it does not guarantee you owe a mountain of cash. It simply means the IRS has a question, and time is ticking.

Before you panic, let’s look at what the IRS is actually asking for.

Q: Does an IRS notice mean I am being audited?

A: Not necessarily. Think of a notice as the IRS starting a conversation. They mail them out for dozens of routine reasons: matching up income discrepancies, verifying your identity, setting up payment plans, or asking for a missing form. Most of these letters are purely administrative and can be resolved smoothly when handled correctly.

Q: What is the biggest mistake taxpayers make?

A: Playing hide-and-seek with the envelope.

The absolute worst thing you can do is let an IRS notice gather dust on your kitchen counter. These letters come with strict deadlines. If you ignore them, the IRS does not just forget about you; instead, the penalties grow, interest piles up, and you risk losing your right to appeal.

Q: Should I call the IRS immediately?

A: Not always. Hold off on dialing that 1-800 number just yet.

Pounding the pavement without a plan usually leads to long hold times and frustration. Before you call, you need to know exactly what tax year they are looking at, what specific problem they are flagging, and what paperwork you need to back up your case. Going in prepared changes the entire game.

Q: Can I respond myself?

A: You can, but it can be a slippery slope. Responding incorrectly or sending the wrong document can accidentally open up new questions and complicate a fixable situation. Every single notice has its own quirks, and a professional review ensures you do not accidentally step into a tax trap.

Q: How can an Enrolled Agent help?

A: Enrolled Agents are federally licensed tax professionals authorized by the U.S. Department of the Treasury to represent taxpayers before the IRS in all 50 states.

As a Senior Enrolled Agent and the founder of Sebastians Tax Service, I deal with IRS notices, audits, and collection issues every single day. My job is to take the heavy burden off your shoulders, protect your taxpayer rights, and map out a clear, stress-free path to resolution.

Final Thoughts

An IRS notice is not a reason to panic, but it is a call to action. The faster we look at it, the more options we have to fix it. If you have a letter sitting on your desk and you are not sure what your next move should be, let a professional take a look. It is the easiest way to avoid unnecessary penalties, delays, and sleepless nights.

The IRS has already mailed the notice. The clock is already running. The only remaining question is whether you address it now or wait until the problem becomes more expensive.

If you’ve received an IRS notice, don’t guess. Let's review it together before you reply.

Sebastian Herrera Senior Enrolled Agent
Business Analytics Specialist
951-444-8136
Serving South Corona and Temescal Valley

Memorial Day is a day of remembrance. Veterans Day is a day of gratitude. Today, we honor those who gave all. 🇺🇸
05/25/2026

Memorial Day is a day of remembrance. Veterans Day is a day of gratitude. Today, we honor those who gave all. 🇺🇸

Beyond the Profit & Loss Statement: Why Automated Bookkeeping Puts Your Business at RiskReal Bookkeeping is Not a Defaul...
05/13/2026

Beyond the Profit & Loss Statement: Why Automated Bookkeeping Puts Your Business at Risk

Real Bookkeeping is Not a Default Software Setting
Most business owners rely on standard accounting software to track their financial performance. These programs generate a generic report called a "Profit and Loss Statement."

This report is often misleading. It simply organizes automated entries into default categories, creating potential audit risks and obscuring your true profit margins.
Why Your Business Needs Financial Reconstruction Summary Analytics

Automated data entry cannot capture the operational realities of a high-transaction business. True financial health requires forensic reconstruction rather than passive bookkeeping.

This firm provides specialized Financial Reconstruction Summary Analytics. This process bypasses automated defaults to reconstruct your financial history directly from your foundational source documents:

• Source-Document Verification: Every entry is cross-referenced directly with bank clearing data, merchant statements, and vendor invoices.
• Forensic Expense Breakdown: We isolate hidden operational leaks, separate mixed-use expenses, and capture overlooked industry-specific deductions.
• Audit-Ready Clarity: We build a verified financial trail that accurately reflects your business operations and protects against regulatory scrutiny.

Tailored Forensic Solutions for Local Industries
Generic software defaults frequently fail to track the unique operational variables of high-volume local businesses:

• Real Estate & Legal Practices: We reconcile volatile commission structures, extensive marketing costs, and client trust accounts to ensure complete compliance.
• Independent Retail & Gas Stations: We verify fluctuating inventory margins, cash-drawer variances, and complex vendor billing cycles.
• Logistics & High-Travel Sectors: We evaluate actual costs against federal standard methods to maximize your legal write-offs.

Stop relying on automated software rules to manage your compliance. Contact the office directly or message us through this profile to schedule a complete forensic review of your corporate financial records.
Sebastian Herrera, Senior Enrolled Agent
Business Analytics Specialist
Serving South Corona and Temescal Valley
Including a 50 States!

THE "GHOST PREPARER" DISAPPEARING ACTWhile the "seasonal clerks" and "ghost preparers" have officially cleared out of th...
05/04/2026

THE "GHOST PREPARER" DISAPPEARING ACT
While the "seasonal clerks" and "ghost preparers" have officially cleared out of the rental offices, we are on duty 365 days a year.

THE MAY 5TH TECHNICAL REALITY
If you already filed and paid by the April deadline, you’re in the clear.

However, the work doesn't stop for a professional entity. We are currently deep in the Forensic Reconstruction of data for our 4868 (Individual) and 7004 (C-Corp) extension filings.
MID-YEAR ALERT:

• Estimated Payments: Your first 2026 quarterly payment was due April 15. If you missed it, "Standard Mythology" won't save you from IRS interest.
• Payroll Obligations: Employers must maintain their federal withholding and F**A deposits on schedule.

Don't be left stranded by a seasonal office. Work with a professional who is here when the technical heavy lifting actually happens.
Sebastian Herrera, Senior Enrolled Agent
B.B.A. in Business Analytics
Serving Southern Corona and Temescal Valley

THE “POST-APRIL 15th” SILENCE IS A TRAP. 📉🛑April 20 in Corona: The Files Are Quiet. The Work Isn’t.Tax Day has passed. T...
04/22/2026

THE “POST-APRIL 15th” SILENCE IS A TRAP. 📉🛑
April 20 in Corona: The Files Are Quiet. The Work Isn’t.

Tax Day has passed. The pop-up tents are gone. The “quick refund” sales pitches have ended. For most of the valley, the assumption is: “We’re done until next year.”

That’s exactly where the real liability starts.
While the seasonal clerks have closed their doors, I’m back in the lab at Troy Courtreviewing my extension roster. I’m looking at the S-Corps, C-Corps, and high-stakes individual filings that weren’t rushed through a seasonal assembly line.

Because once April 15th passes, the work changes.
It’s no longer just about filing. It’s about auditing what was filed… and catching what was missed.

The Post-Season Reality Check:
• The "Good Enough" Trap: Corporate books that were "close enough" for a deadline are now being forensically reconstructed.
• The Extension Myth: An extension is a delay, not a finish line. If your numbers weren't analyzed by a professional before filing, they won’t magically fix themselves in May.
• The Trucking Clock: For my drivers—2290 filings are approaching faster than you think. Are you ready, or are you waiting for another last-minute crisis?

Most firms slow down after April. This is where I start digging in.
Software doesn't revisit your return. A seasonal clerk isn't calling you back in June. And "guessing" on your corporate expenses isn't a strategy—it’s an invitation for an audit.

What I’m Doing This Week:
✅ Reworking corporate bookkeeping for extension clients.
✅ Running forensic expense vs. reported comparisons.
✅ Pre-preparing 2290s before they become expensive problems.
✅ Defending the equity of the clients who trust this lab.
Corona, Dos Lagos, Temescal Valley—It’s the same pattern every year.

April is loud. May is quiet. And June is when people realize their "quick filing" didn't actually add up.
Don't wait for the quiet to turn into a crisis. The lights are on 365 days a year at Sebastian’s Tax Service Inc.
📞 Call 951-444-8136
📍 2620 Troy Court, Corona, CA
Sebastian Herrera, EA
Senior Enrolled Agent | B.B.A. Business Analytics
THE DATA ARCHITECT.

🛡️THE STRATEGIC LANE: SO, CORONA & TEMESCAL VALLEY🛡️The "pop-up" shops are gone, but our fortress is open year-round. We...
04/19/2026

🛡️THE STRATEGIC LANE: SO, CORONA & TEMESCAL VALLEY🛡️

The "pop-up" shops are gone, but our fortress is open year-round. We’ve pivoted directly into Final Extensions and 2026 Mid-Year Tax Planning.

🚫 Stop the DIY Bookkeeping Trap: If your spouse is doing your books without professional training, you are sitting on a tax time bomb. We demand professional-grade data because we deliver professional-grade results.

✅ Finalizing Extensions (Sept 15 & Oct 15)
✅ 2026 Mid-Year Tax Strategy & Audit Defense
✅ Proprietary Reconciliation (No QuickBooks traps here)
✅ Missed deadlines? We stop the bleeding and set up payment plans.
Sebastian Herrera, EA
Senior Enrolled Agent
2798 Troy Court, Unit 105, Corona, CA 92883
SEBASTIAN’S TAX SERVICE Inc.
951-444-8136

Headline: TAX DAY 2025: THE FORTRESS STILL STANDS! 🏛️🍹"If we look a little rough around the edges, it’s because we just ...
04/15/2026

Headline: TAX DAY 2025: THE FORTRESS STILL STANDS! 🏛️🍹

"If we look a little rough around the edges, it’s because we just went 12 rounds with the Midnight Hammer! 🔨💨
While the corporate mills are still scrambling and their seasonal pop-up offices are packing up their suitcases, we are officially closing the books on new filings for the 2025 season.

To the 15 callers who found us on the map today and chose Senior EA oversight and Business Analytics scrutiny over 'crap software'—welcome to the family. You made the right move to protect your business, and we’ve got your back. 🤝

We are now pivoting to our final wave of Federal and State extensions. If you missed the window or your 'expert' tax preparer ghosted you at 5:00 PM, our doors at Troy Court will be open in May for the cleanup.

Now, if you’ll excuse us, we have a date with a cocktail and a very long nap. 🥂💤

Sebastians Tax Service Inc.
Senior Enrolled Agent | B.B.A. in Business Analytics
Vetted Federal Practitioner since 2009.
1161 Troy Ct, Corona, CA 92881
(951) 444-8136"

Headline: 48-HOUR DEADLINE: Federal Extension ProtectionDon’t gamble with the IRS. Whether you need a C-Corporation Exte...
04/14/2026

Headline: 48-HOUR DEADLINE: Federal Extension Protection
Don’t gamble with the IRS. Whether you need a C-Corporation Extension (Form 7004) or an Individual Extension (Form 4868), you need more than just a tax preparer—you need a specialist with Federal Standing.
The Temescal Valley Specialist & Corona Authority
• Senior Enrolled Agent: Holding the highest credential the IRS awards.
• Business Analytics Degree: Forensic precision for complex corporate and personal filings.
• Federal Practitioner: My 20-year veteran credentials are live and verifiable on the official IRS Federal Tax Return Preparer Directory.
Specialized Hours for the Final Push:
• MON & TUE: 5:00 AM – 9:00 PM
• WEDNESDAY DEADLINE: 3:00 AM – 8:00 PM
Serving Temescal Valley, South Corona, Dos Lagos, and surrounding Corona areas.
Remember: An extension of time to FILE is not an extension of time to PAY. Secure your standing with a Federal Practitioner who knows the code.

Headline: Secure Your Tax Year 2025 Extension with a Senior EA & Analytics ExpertWith 8 days until the April 15th deadli...
04/07/2026

Headline: Secure Your Tax Year 2025 Extension with a Senior EA & Analytics Expert

With 8 days until the April 15th deadline, precision is more important than speed. For individuals and C-Corps with complex financial data, a strategic extension is the most professional way to ensure accuracy and protection.

As a Senior Enrolled Agent with a degree in Business Analytics, I provide quantitative scrutiny that general preparers miss. We specialize in high-level reconciliations to ensure your 2025 data is optimized and defensible before it ever reaches the IRS.

The Sebastian Advantage:
• Analytics-Driven Estimates: We mathematically calculate your 2025 estimated tax payments to avoid underpayment penalties.
• Taking the time to reconcile complex data properly is the best defense against IRS red flags.
• Local Authority: Serving the South Corona and Temescal Valley community with viable, expert representation for nearly 20 years.

We are currently accepting new business and individual clients for Tax Year 2025 Extensions and long-term tax strategy.
[Button: Call Now] 👇

Address

2798 Troy Court Unit 105 Bldg 1
Corona, CA
92883

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