How to Use This Calculator
- 1
Enter Costs and Start Date
Input your total qualifying start-up costs, the year and month your business began operations. The start month determines how many months of amortization count toward year one.
- 2
Set Your Tax Rate
Enter your estimated effective tax rate. The calculator uses this to estimate tax savings from each year's deduction.
- 3
Review Deductions and Schedule
See the first-year deduction, annual amortization, Section 195 immediate deduction, total tax savings, and completion year. The Insights panel shows the phase-out impact, start month timing, and tax rate sensitivity. A chart and year-by-year table show the full schedule.
Example Calculation
A new business incurs $50,000 in qualifying start-up costs and begins operations in January 2026, with a 25% effective tax rate.
Total Start-Up Costs
$50,000
Business Start Year
2026
Business Start Month
January
Effective Tax Rate
25%
Results
First-Year Deduction
$8,000
Annual Amortization
$3,000
Section 195 Immediate Deduction
$5,000
Total Tax Savings
$12,500
Amortization Complete
2040
Insights card shows costs at exact $50,000 phase-out threshold, January start maximizes first-year amortization (12 months/$3,000), and tax savings range from $10,000 at 20% to $15,000 at 30%.
Tips
Watch the $50,000 Threshold
The Insights panel shows your phase-out status. Every dollar of costs above $50,000 reduces the $5,000 immediate deduction by $1. At $55,000+, the immediate deduction is eliminated entirely — all costs amortize over 180 months.
Time Your Business Start Strategically
Starting in January gives a full 12 months of amortization in year one. The Insights panel shows the deduction impact of your chosen start month — starting mid-year means fewer months of amortization and a lower first-year deduction.
Compare Tax Rate Scenarios
The Insights panel shows how total tax savings change at different rates. A higher effective rate magnifies every deduction dollar — the difference between 20% and 30% on $50,000 in costs is $5,000 in total savings.
Understanding Start-Up Cost Amortization Under Section 195
The Amortized Start-Up Cost Calculator estimates how qualifying business start-up expenses are deducted under IRS Section 195.
Enter your total costs, business start date, and tax rate to see the first-year deduction, annual amortization, immediate deduction amount, total tax savings, and when amortization completes.
The Insights panel shows your phase-out status relative to the $50,000 threshold, how your start month affects the first-year deduction, and how tax savings change at different rates.
A chart and year-by-year table show the full deduction schedule.
The Section 195 Deduction Formula
Start-up cost deductions follow a two-part structure:
Immediate Deduction = min($5,000, max(0, $5,000 - (Total Costs - $50,000)))
Amortizable Costs = Total Costs - Immediate Deduction
Monthly Amortization = Amortizable Costs / 180
First-Year Deduction = Immediate Deduction + (Monthly Amort x Months in Year 1)
The $5,000 immediate deduction phases out dollar-for-dollar above $50,000 and is eliminated at $55,000.
Everything else amortizes straight-line over 180 months.
Worked Example: $50,000 in Start-Up Costs
A new business incurs $50,000 in qualifying costs and begins operations in January 2026 with a 25% effective tax rate.
Section 195 Immediate Deduction: Costs are exactly $50,000 (at the phase-out threshold), so the full $5,000 is available.
Amortizable Costs: $50,000 - $5,000 = $45,000
Monthly Amortization: $45,000 / 180 = $250/month
First-Year Deduction (2026): $5,000 + ($250 x 12 months) = $8,000
Summary:
- Annual Amortization: $250 x 12 = $3,000/year (years 2-15)
- Total Tax Savings: $50,000 x 25% = $12,500 over the full period
- First-Year Tax Savings: $8,000 x 25% = $2,000
- Amortization Complete: 2040 (15 tax years)
How the Phase-Out Affects Different Cost Levels
The $5,000 immediate deduction disappears quickly above $50,000.
Here's how different cost levels compare (January start, 25% tax rate):
| Total Costs | Immediate Deduction | Amortizable | Monthly Amort | First-Year Deduction | Total Tax Savings |
|---|---|---|---|---|---|
| $30,000 | $5,000 | $25,000 | $138.89 | $6,667 | $7,500 |
| $50,000 | $5,000 | $45,000 | $250.00 | $8,000 | $12,500 |
| $52,000 | $3,000 | $49,000 | $272.22 | $6,267 | $13,000 |
| $55,000 | $0 | $55,000 | $305.56 | $3,667 | $13,750 |
| $75,000 | $0 | $75,000 | $416.67 | $5,000 | $18,750 |
Notice the first-year deduction actually drops from $8,000 to $6,267 when costs increase from $50,000 to $52,000.
Losing the immediate deduction has a bigger first-year impact than the slightly higher amortization amount.
Start Month Impact on First-Year Deduction
How the business start month affects the first-year deduction ($50,000 costs, 25% rate):
| Start Month | Months in Year 1 | First-Year Amort | First-Year Total | First-Year Tax Savings |
|---|---|---|---|---|
| January | 12 | $3,000 | $8,000 | $2,000 |
| April | 9 | $2,250 | $7,250 | $1,813 |
| July | 6 | $1,500 | $6,500 | $1,625 |
| October | 3 | $750 | $5,750 | $1,438 |
The immediate deduction ($5,000) is always available regardless of start month.
Only the amortization portion changes.
Frequently Asked Questions
What are IRS Section 195 start-up costs?
Section 195 covers expenses incurred before your business begins operations — market research, legal fees, advertising, employee training, and investigating a potential business. These costs would be deductible if incurred after the business started, so Section 195 provides a path to deduct them even though they were pre-opening expenses.
How does the $5,000 immediate deduction work?
You can deduct up to $5,000 of start-up costs immediately in your first year. But this amount is reduced dollar-for-dollar for total costs exceeding $50,000. At $52,000 in costs, the immediate deduction drops to $3,000. At $55,000 or more, the immediate deduction is fully eliminated and all costs must be amortized.
How does the 180-month amortization work?
Any start-up costs not covered by the immediate deduction are spread evenly over 180 months (15 years) using straight-line amortization. For $45,000 in amortizable costs, that's $250/month or $3,000/year. Amortization begins in the month the business starts operations.
Does the business start month affect my deduction?
Yes. The start month determines how many months of amortization apply to your first tax year. Starting in January gives 12 months ($3,000 for the default example), while starting in July gives only 6 months ($1,500). The immediate deduction is not affected by start month — you get it regardless of when you start.
What costs qualify under Section 195?
Qualifying costs include market surveys, feasibility studies, advertising for the opening, travel to scope out locations, consultant fees, and employee training before operations begin. Capital assets (equipment, property) are NOT Section 195 costs — they're depreciated separately. Organizational costs (incorporation fees, state filing fees) have their own $5,000/$50,000 rule under Section 248.