CapForge Guide to Using Accountable Plans for US Business Owners

What is an Accountable Plan?

An accountable plan is a reimbursement arrangement where a business reimburses employees (including owner-employees) for legitimate business expenses without those reimbursements being treated as taxable income. When done correctly, the business gets a tax deduction for the reimbursement, and the employee receives the money tax-free—no income tax, no Social Security/Medicare tax, and no reporting on W-2.

Without an accountable plan, reimbursements are treated as taxable wages, subject to all payroll taxes and reported on the W-2.

Requirements for an Accountable Plan

The IRS requires three specific conditions to be met:

1. Business Connection

Expenses must have a business purpose—they must be ordinary and necessary business expenses that would be deductible by the business if it paid them directly.

Qualifying expenses:

• Mileage or actual vehicle expenses
• Travel expenses (airfare, hotels, meals)
• Client entertainment meals
• Office supplies purchased by employees
• Professional development and education
• Business-related phone and internet
• Home office expenses
• Parking and tolls
• Professional dues and subscriptions

Non-qualifying expenses:

• Commuting costs from home to regular workplace
• Personal expenses
• Expenses that would not be deductible to the business

2. Substantiation Within a Reasonable Time

Employees must adequately account for expenses with receipts, invoices, mileage logs, and documentation showing the business purpose, amount, date, and place.

“Reasonable time” IRS safe harbors:

• Expenses substantiated within 60 days of being incurred
• Reimbursement requested within 120 days of expense being paid/incurred
• Periodic statements provided at least quarterly

Required documentation:

• Receipts for expenses over $75 (mileage and transportation require logs regardless of amount)
• Date and location of expense
• Business purpose
• For meals: names and business relationships of persons entertained
• For mileage: date, destination, business purpose, miles driven

3. Return of Excess Within a Reasonable Time

Any excess reimbursement or advance must be returned to the employer within a reasonable time.

IRS safe harbors:

• Advances provided within 30 days of expense
• Excess reimbursements returned within 120 days of expense
• Employer issues periodic statements (at least quarterly) and excess is returned within 120 days

Who Qualifies for Accountable Plans?

Entities That Can Establish Accountable Plans:

C Corporations:

• Can reimburse all employees, including owner-employees
• Most straightforward application
• Shareholders who are also employees qualify fully

S Corporations:

• Can reimburse employees, including owner-employees
• Critical limitation: Shareholders owning more than 2% are NOT considered employees for fringe benefit purposes
• 2%+ shareholders can still be reimbursed, but have different treatment (see below)

Partnerships:

• Cannot reimburse partners under accountable plans
• Partners are self-employed, not employees
• Expenses typically deducted on Schedule E or through guaranteed payments

LLCs:

• Single-member LLCs taxed as sole proprietorships: No accountable plan (owner is not an employee)
• Multi-member LLCs taxed as partnerships: Partners cannot use accountable plans
• LLCs electing S-corp or C-corp status: Follow S-corp or C-corp rules

Sole Proprietorships:

• Cannot establish accountable plans
• Owner is not an employee of their own business
• Expenses deducted directly on Schedule C

Employee Requirements:

W-2 employees: Fully qualify for accountable plan reimbursements that are tax-free.

Owner-employees: Qualify based on entity structure:

• C-corp: Full qualification
• S-corp with less than 2% ownership: Full qualification
• S-corp with 2%+ ownership: Modified treatment (see below)

Independent contractors (1099): Cannot participate in accountable plans—they deduct their own business expenses.

Special Rules for S-Corporation 2%+ Shareholders

For S-corp shareholders owning more than 2%:

Accountable plan still works, BUT:

• Reimbursements are tax-deductible to the corporation
• Reimbursements are added to shareholder’s W-2 as taxable income (Box 1)
• NOT subject to Social Security/Medicare taxes
• Shareholder can then deduct the expenses on their personal return (Schedule A for some items, though most employee expenses are not deductible 2018-2025)
• For health insurance: Added to W-2 but deductible as self-employed health insurance

Practical implication: For 2%+ S-corp shareholders, the benefit is avoiding payroll taxes on reimbursements, not avoiding income tax entirely. However, for items like mileage and home office, it’s better to structure these differently:

Better alternatives for S-corp 2%+ shareholders:

• Mileage: Reimburse via accountable plan, include in W-2, but this avoids payroll tax
• Home office: Have corporation rent office space from shareholder (see below)
• Health insurance: Pay directly and add to W-2, deduct as self-employed health insurance

When Should Accountable Plans Be Used?

Optimal Scenarios:

1. C-Corporation Owners/Employees

• Always use accountable plans for business expenses
• Provides complete tax-free treatment to employee
• Full deduction to corporation
• No downside

2. S-Corporation with Employees (Non-owners or <2% Owners)

• Use for all legitimate business expenses
• Clean tax treatment for employees
• Reduces corporate payroll costs

3. Common Reimbursable Expenses:

Vehicle expenses:

• Reimburse at IRS mileage rate (70 cents per mile for 2025)
• Or reimburse actual expenses with documentation
• Requires contemporaneous mileage log

Travel expenses:

• Hotels, airfare, rental cars
• Meals while traveling (50% deductible to business for non-entertainment meals, 100% for 2021-2022)
• Follow IRS per diem rates for simplicity

Home office expenses:

• Can reimburse employees for qualified home office costs
• Requires meeting home office deduction requirements
• Document allocation of utilities, insurance, etc.

Cell phone and internet:

• Document business use percentage
• Reimburse proportional business costs

Professional development:

• Conferences, courses, certifications
• Must be business-related

When NOT to Use Accountable Plans:

1. Partnerships and Partners

• Partners are self-employed, not employees
• Partners deduct expenses directly on Schedule E or via guaranteed payments
• Using accountable plan structure could trigger employee reclassification issues

2. Sole Proprietors

• Cannot reimburse themselves
• Deduct expenses directly on Schedule C

3. When Documentation is Inadequate

• Without proper substantiation, reimbursements become taxable wages
• Better to skip reimbursement than create tax problems

4. Personal Expenses

• Never run personal expenses through accountable plan
• Red flag for IRS audits

Setting Up an Accountable Plan

Written Plan Requirements:

While not legally required, a written accountable plan policy is strongly recommended and provides audit protection.

Key elements of written plan:

• Statement that plan is an accountable plan meeting IRS requirements
• Types of expenses eligible for reimbursement
• Substantiation requirements and deadlines
• Reimbursement request procedures
• Treatment of excess reimbursements
• Timeframes for submitting expenses and returning excess

Sample Plan Structure:

1. Purpose: To reimburse employees for ordinary and necessary business 

   expenses while maintaining IRS accountable plan status.

2. Eligible Expenses: [List categories – mileage, travel, supplies, etc.]

3. Substantiation: Employees must submit:

   – Receipts for expenses over $75

   – Date, location, business purpose

   – Mileage logs for vehicle expenses

   – Within 60 days of expense incurred

4. Reimbursement: Approved expenses reimbursed within 30 days of submission

5. Excess Returns: Any excess advances must be returned within 120 days

6. Record Retention: Company maintains records for 7 years

Implementation Steps:

1. Adopt written policy

• Document in corporate records
• Have board resolution for corporations

2. Create expense report forms

• Include all required documentation fields
• Business purpose, date, amount, category
• Signature and date lines

3. Establish submission process

• Regular submission schedule (monthly is common)
• Clear approval authority
• Reimbursement method (direct deposit, check)

4. Set up tracking system

• Spreadsheet or accounting software
• Track submission dates, approval dates, reimbursement dates
• Maintain digital copies of all receipts

5. Train employees

• Explain what expenses qualify
• Documentation requirements
• Submission deadlines

Practical Examples

Example 1: C-Corp Owner-Employee

Scenario: Owner drives 10,000 business miles per year, has $5,000 in travel expenses, $2,000 in client meals.

With Accountable Plan:

• Mileage reimbursement: $7,000 (10,000 × $0.70)
• Travel reimbursement: $5,000
• Meal reimbursement: $2,000
• Total reimbursement: $14,000 tax-free to employee
• Business deducts: $13,000 ($7,000 + $5,000 + $1,000 meals at 50%)
• Employee saves: ~$3,360 federal income tax (24% bracket)
• Employee saves: ~$1,071 Social Security/Medicare (7.65%)
• Total tax savings: ~$4,431

Without Accountable Plan:

• Owner pays expenses personally: $14,000
• No reimbursement received
• Cannot deduct as employee (2018-2025 TCJA rules)
• Out-of-pocket: $14,000 with no tax benefit

Example 2: S-Corp 2%+ Shareholder

Scenario: Same expenses as above—10,000 business miles, $5,000 travel, $2,000 meals.

With Accountable Plan:

• Total reimbursement: $14,000
• Added to W-2 Box 1: $14,000
• Federal income tax owed: ~$3,360 (24% bracket)
• No Social Security/Medicare tax: $0
• Corporation deducts: $13,000
• Net benefit: Saves ~$1,071 in payroll taxes vs. being paid as salary

Without Accountable Plan (paid as salary increase):

• Additional salary: $14,000
• Federal income tax: ~$3,360
• Social Security/Medicare (both sides): ~$2,142
• Total tax cost: ~$5,502
• Difference: $1,071 saved with accountable plan

Example 3: S-Corp Non-Owner Employee

Scenario: Sales employee drives 15,000 business miles per year.

With Accountable Plan:

• Mileage reimbursement: $10,500 (15,000 × $0.70)
• Tax-free to employee
• Deductible to corporation
• No W-2 reporting
• Result: Employee receives full $10,500, corporation deducts $10,500

Without Accountable Plan:

• Employee pays $10,500 out of pocket
• Cannot deduct (employee business expenses suspended 2018-2025)
• Effective loss to employee: $10,500

Special Considerations

Home Office Reimbursement Alternative

For S-corp 2%+ shareholders, rather than reimbursing home office expenses:

Rent approach:

• Corporation rents office space from shareholder
• Market rate rental payment
• Shareholder reports rental income on Schedule E
• Can offset with home office expenses on Schedule E
• Avoids W-2 inclusion

Requirements:

• Written lease agreement
• Market rate rental amount
• Separate rental space
• Corporation actually uses the space

Vehicle Expense Strategies

Company-owned vehicle:

• Corporation buys/leases vehicle
• Provided to employee for business use
• Personal use taxable as fringe benefit
• Corporation deducts all costs

Personal vehicle with reimbursement:

• Employee owns vehicle
• Corporation reimburses per accountable plan
• Employee maintains vehicle
• More flexibility for employee

Advance vs. Reimbursement

Advances:

• Given before expense incurred
• Must be reasonably calculated
• Excess returned within 120 days
• Common for travel expenses

Reimbursements:

• Given after expense paid
• Based on actual documented costs
• Preferred method for better control

Common Mistakes to Avoid

1. No documentation

• IRS reclassifies as taxable wages
• Back taxes, penalties, interest

2. Reimbursing personal expenses

• Not deductible to business
• Taxable income to employee
• Audit red flag

3. Late substantiation

• Outside “reasonable time” safe harbors
• Reimbursements become taxable

4. Using with non-employees

• Partners and sole proprietors cannot participate
• Could trigger employment tax issues

5. No written policy

• Harder to defend in audit
• Inconsistent application

6. Treating all S-corp shareholders the same

• 2%+ shareholders have different rules
• Failure to add to W-2 creates problems

7. Excessive reimbursements

• Above reasonable business amounts
• IRS may reclassify as disguised compensation

Record Retention

Maintain for at least 7 years:

• All expense reports and supporting receipts
• Mileage logs
• Reimbursement checks/records
• Written accountable plan policy
• Board resolutions adopting plan

Tax Reporting

Proper accountable plan:

• No Form W-2 reporting (except S-corp 2%+ shareholders)
• No Form 1099 reporting
• Not included in Box 1 wages
• Corporation deducts on appropriate expense lines

Failed accountable plan:

• Reimbursements reported on Form W-2
• Subject to income tax and payroll taxes
• Must be corrected with amended returns

Bottom Line Recommendations

Always use accountable plans if:

• You’re a C-corporation with any employees
• You’re an S-corporation with non-owner employees
• You’re an S-corporation with employees owning less than 2%
• Employees regularly incur business expenses

Consider alternatives for:

• S-corp 2%+ shareholders (evaluate payroll tax savings)
• Partnerships (use guaranteed payments or direct expense deductions)
• Sole proprietors (direct Schedule C deductions)

Keys to success:

• Maintain written policy
• Document everything contemporaneously
• Follow the three IRS requirements religiously
• Keep separate business and personal expenses
• Review and update policy annually

For business owners with employees incurring legitimate business expenses, accountable plans are one of the most effective tax planning tools available—providing tax-free reimbursements while maintaining full business deductions. The administrative burden of proper documentation is far outweighed by the tax savings generated.

Please note: The tax-related information provided here is for general informational purposes only and should not be construed as specific tax advice, nor does it establish a tax advisor-client relationship. Tax laws are complex, subject to change, and vary based on individual circumstances and jurisdictions. You should consult with a qualified tax professional, certified public accountant, or tax attorney regarding your specific tax situation before making any decisions or taking any actions based on this information and we assume no liability for your use of this information without seeking further consultation for your specific situation. 

Have questions or want to talk to one of our CPAs? Fill out the form below!

Contact Form