• Pinpoint their AMT exposure

• Complete the right IRS forms

• Optimize cash flow around quarterly payments

• Understand the difference between selling ISOs in the same year versus holding them

The Client’s Equity Exercise

Grants Exercised:

• 3,000 ISOs at $10 strike when FMV was $50 → $120,000 AMT preference item

• 500 NSOs at $10 strike when FMV was $50 → $20,000 ordinary income

Without planning, this client faced an estimated $35,000 AMT bill in April—on top of their regular tax. Here’s how we transformed that looming liability into a clear, manageable plan.

Step 1: Calculate Your NSO Liability

1. Compute the “Bargain Element”
   (FMV − Strike Price) × # Shares
   → ($50 − $10) × 500 = $20,000 of ordinary income

2. Report on Form W-2

   • Box 1: +$20,000 wages

   • Boxes 2, 4 and 6: Withholding for federal income tax and FICA/Medicare

3. AMT Impact
   NSO income flows through your regular tax—no AMT adjustment on Form 6251

Step 2: Unpack Your ISO AMT Exposure

A. Compute the AMT Preference Item

(FMV − Strike Price) × # Shares → ($50 − $10) × 3,000 = $120,000

B. Complete Form 6251 (Alternative Minimum Tax)

• Line 2i: Enter $120,000

• Line 11: Subtract the AMT exemption (for 2025, $126,500 for married filing jointly)

• Lines 26–28: Apply the 26% and 28% AMT rates to calculate the tentative minimum tax

C. Compare vs. Your Regular Tax

• AMT Due = Tentative Minimum Tax − Regular Tax (reported on Form 1040 Schedule 2, Line 1)

• In this case, the difference was $35,000

Step 3: Understand ISO Disposition Scenarios

• Same-Year Sale Example:
  Exercise 3,000 ISOs at $10 (FMV $50) → $120K preference; sell at $60

  • $40/share × 3,000 = $120K ordinary income on W-2

  • $10/share × 3,000 = $30K short-term capital gain

• Hold Beyond Year-End:
  No extra W-2 income. All gain is long-term capital gain when sold, and the AMT paid initially can generate a credit (Form 8801) to reduce future regular tax.

Step 4: Align Your Estimated Tax Payments

Because ISOs have no withholding, cover your AMT liability through Form 1040-ES vouchers. We recommended:

• Increase quarterly vouchers by the estimated $35,000

• Time payments to coincide with known income events, preserving cash flow

Results & Key Takeaways

• Zero surprise: Proactive AMT projection eliminated a $35,000 shock

• Optimized cash flow: Quarterly payments timed to income reduced liquidity strain

• Reusable process: This 30-minute framework works for every future ISO/NSO exercise

Ready to Avoid Your Own AMT Headache?

Flex Tax & Consulting Group specializes in Bay Area equity-compensation tax planning. In a 30-minute consultation, our experts will:

• Model your ISO/NSO tax liability (Form 6251 and Form 1040)

• Map out quarterly estimated-tax strategies (Form 1040-ES)

• Show you how to bank AMT credits for future use (Form 8801)

Talk to a Bay Area Tax Advisor

At Flex Tax and Consulting Group, we specialize in Solo 401(k) planning, entity structuring, and tax reduction strategies for independent contractors, consultants, and small business owners across the San Francisco Bay Area, especially in Castro Valley and San Francisco.

We offer personalized consultations to evaluate whether an S-Corp is right for you, how to structure your compensation, and how to legally minimize your tax burden.

Schedule a consultation today:
https://flextcg.zohobookings.com/#/taxadvisory

About Flex Tax and Consulting Group

Flex Tax is a full-service tax advisory firm based in the Bay Area. We support professionals, founders, and investors throughout San Francisco, Castro Valley, and beyond with proactive, year-round planning beyond just filing returns.

Related Post:

California Equity-Based Compensation Guidelines – Move from CA to Other States

The post Case Study: How to Calculate AMT on ISOs & NSOs: Equity Compensation Tax Guide appeared first on Flex Tax and Consulting Group (FTCG).

If so, is your S corporation salary

• nonexistent?
• too low?
• too high?
• just right?

Getting the S corporation salary right is important. First, if it’s too low and you get caught by the IRS, you will pay not only income taxes and self-employment taxes on the too-low amount, but also both payroll and income tax penalties that can cost plenty.

Second, in most cases, the IRS is going to expand the audit to cover three years and then add the income and penalties for those three years.

Third, after being found out, you likely are now stuck with this higher salary, defeating your original purpose of saving on self-employment taxes.

Getting to the Number

The IRS did you a big favor when it released its “Reasonable Compensation Job Aid for IRS Valuation Professionals.”

The IRS states that the job aid is not an official IRS position and that it does not represent official authority. That said, the document is a huge help because it gives you some clearly defined valuation rules of the road to follow and takes away some of the gray areas.

Market Approach

The market approach to reasonable compensation compares the S corporation’s business with others and then looks at the compensation being paid by those businesses to employees who look like you, the shareholder-employee who is likely the CEO.

The question to be answered is, how much compensation would be paid for this same position, held by a nonowner in an arm’s-length employment relationship, at a similar company?

In its job aid, the IRS states that the courts favor the market approach, but because of challenges in matching employees at comparable companies, the IRS developed other approaches.

Cost Approach

The cost approach breaks your employee activities into their components, such as management, accounting, finance, marketing, advertising, engineering, purchasing, janitorial, bookkeeping, clerking, etc.

Here’s an example of how the cost approach works to support a $71,019 salary as reasonable compensation for this S corporation owner whose corporation had $3.5 million in revenue and 19 employees:

Health Insurance

The S corporation’s payment or reimbursement of health insurance for the shareholder-employee and his or her family goes on the shareholder-employee’s W-2 and counts as compensation, but it’s not subject to payroll taxes, so it fits nicely into the payroll tax savings strategy for the S corporation owner.

Pension

The S corporation’s employer contributions on behalf of the owner-employee to a defined benefit plan, simplified employee pension (SEP) plan, or 401(k) count as compensation but don’t trigger payroll taxes. Such contributions further enable the savings on payroll taxes while adding to the dollar amount that’s considered reasonable compensation.

Planning note. Your S corporation compensation determines the amount that your S corporation can contribute to your SEP or 401(k) retirement plan. The defined benefit plan likely allows the corporation to make a larger contribution on your behalf.

Section 199A Deduction

The S corporation’s net income that is passed through to you, the shareholder, can qualify for the 20 percent Section 199A tax deduction on your Form 1040.

To be better understand the S Corporation Salary’s detailed information. We are here to help you. Don’t hesitate to call our office:415-860-6288 (San Francisco), 917-397-0949 (New York) and 713-396-0107 (Houston), and e-mail us at info@flextcg.com.

The post Avoid Trouble: Don’t Let the IRS Set Your S Corporation Salary appeared first on Flex Tax and Consulting Group (FTCG).

LLC owners are called members.

• Single-member LLCs have one owner, although spouses who jointly own an LLC in a community property state can elect treatment as a single member LLC for federal income tax purposes.
• We will call LLCs with two or more members multimember LLCs.

Key point: LLCs are not corporations. But LLCs can offer similar legal protection to their members (owners).

Here are the most important things to know about LLCs.

LLCs Offer Legal Protection

Using an LLC to conduct a business or investment activity generally protects your personal assets from LLC-related liabilities—similar to the legal protection offered by a corporation.

As you know, liabilities can arise from simple things—like the Federal Express guy slipping on the banana peel someone left on your front steps—or in seemingly endless and complicated ways if you have employees.

Key point. As a general rule, no type of entity (including an LLC) will protect your personal assets from exposure to liabilities related to your own professional malpractice or your own tortious acts.

Tortious acts are wrongful deeds other than by breach of contract—such as negligent operation of a motor vehicle resulting in property damage or injuries. The issue of liability protection offered by an LLC is a matter of state law. Seek advice from a competent business attorney for details.

Single-Member LLC Tax Basics

Single-member LLC businesses owned by individuals are treated as sole proprietorships for federal income tax purposes unless you elect to treat the single-member LLC as a corporation.

In other words, the default federal income tax treatment for a single-member LLC business is sole proprietorship status. Under the default treatment, you simply report all the single-member LLC’s income and expenses on Schedule C of your Form 1040.

If the single-member LLC business activity generates net self-employment income, you will report that on Schedule SE of your Form 1040.

Rental. If the single-member LLC activity is a rental activity, you report the rental income and expenses on Schedule E of your Form 1040.

Farm or ranch. You report the numbers for a farming or ranching activity on Schedule F.

Simple. You don’t need to file a separate federal income tax return for the single-member LLC. And other things being equal, simple is good.

Three key points

1. The big federal income tax advantage of operating as a single-member LLC is extreme simplicity.
2. The big non-tax advantage is liability protection, under applicable state law.
3. As mentioned, you can elect to treat a single-member LLC as a corporation for federal income tax purposes, but we don’t recommend that, for reasons we explain later.

Multimember LLC Tax Basics

Multimember LLCs are treated as partnerships for federal income tax purposes unless you elect to treat the LLC as a corporation.

In other words, the default federal income tax treatment of a multimember LLC is partnership status. Under the default treatment, you must file an annual partnership federal income tax return on Form 1065.

From the Form 1065 partnership return, the LLC issues an annual Schedule K-1 to each member to report that member’s share of the LLC’s income and expenses. The member then takes those taxable and deductible amounts into account on the member’s own return (Form 1040 for a member who is an individual).

The LLC itself does not pay federal income tax. This arrangement is called pass-through taxation, because the income and expenses from the LLC’s operations are passed through to the members who then take them into account on their own returns. (The same pass-through taxation concept applies to entities set up as “regular” partnerships under applicable state law.)

Electing to Treat the LLC as a Corporation for Tax Purposes

You have the option of electing to treat a single-member LLC or multimember LLC as a corporation for federal income tax purposes. You do that by filing IRS Form 8832, Entity Classification Election, to change the default classification of the single-member LLC or multimember LLC to the new classification as a corporation.

If your desire is to have your LLC treated as an S corporation, it can elect S corporation status directly using IRS Form 2553, or it can elect C corporation treatment on Form 8832 and then S corporation treatment on IRS Form 2553.

While there may be valid non-tax reasons for electing to treat an LLC as a corporation, we think tax reasons generally dictate against taking that step.

If you conclude that there are tax advantages to electing corporate status, why not just actually incorporate your operation in the first place? That’s simpler. Keeping your tax matters simple is generally good policy.

Electing corporate status from the LLC could have unintended tax consequences. For example, you can potentially collect federal-income-tax-free gains from selling stock in a qualified small business corporation (QSBC). But you must own shares and hold them for over five years to cash in on this super-favorable deal. Can an LLC membership (ownership) interest count as QSBC stock for this purpose? Apparently not. It’s not stock.

If you are looking for the QSBC stock break, just set up as a corporation in the first place.

Here’s another example: a special federal income tax break allows you to annually deduct up to $50,000 of losses from selling eligible small business stock, or $100,000 if you’re a married joint filer, and treat the loss as a tax-favored ordinary loss instead of a tax-disfavored capital loss.

Can an LLC membership interest count as eligible stock for this purpose? Apparently not. It’s not stock. Avoid the problem—set up as a corporation in the first place.

To be better understand the Limited Liability Companies’ detailed information. We are here to help you. Don’t hesitate to call our office:415-860-6288 (San Francisco), 917-397-0949 (New York) and 713-396-0107 (Houston), and e-mail us at info@flextcg.com.

The post All About Limited Liability Companies (LLCs) appeared first on Flex Tax and Consulting Group (FTCG).