Business Startup Costs: IRC 195 Deduction and Amortization Rules

By Yarik Yarosh, CPA ·September 5, 2026 ·5 min read

Written by Yarik Yarosh, CPA (US & Canada) September 5, 2026 · FL CPA license AC61704 · CPA Ontario

Expenses incurred before a business opens for operations aren’t regular business deductions. They are “startup costs” under IRC 195, and they follow special rules. The first $5,000 in startup costs can be deducted immediately in the year the business begins (this $5,000 allowance phases out dollar-for-dollar when total startup costs exceed $50,000, reaching zero at $55,000). Any remaining startup costs are amortized (deducted in equal monthly amounts) over 180 months (15 years), beginning in the month the business starts. This rule catches many new business owners by surprise: the $8,000 they spent on market research, legal fees, and pre-opening advertising before the business had its first customer is not simply deducted on Schedule C. It must be separated into the $5,000 immediate deduction and the remainder amortized.

✓Key takeaway

IRC 195 startup cost rules:

What qualifies as a startup cost:

Market research and analysis before opening
Pre-opening advertising and marketing
Travel to evaluate potential business locations or suppliers
Training employees before the business opens
Legal fees for entity formation (LLC, S-Corp)
Accounting setup fees
Consultant fees for business planning
Wages paid to employees during pre-opening training
Technology setup costs (website development, software)

What doesn’t qualify as a startup cost:

Equipment, machinery, furniture: these are depreciable assets (Section 179 or MACRS), NOT startup costs
Inventory: this is an asset, deducted as COGS when sold
Ongoing operating expenses after the business opens: regular deductions
Interest and taxes: deductible under their own IRC sections, not IRC 195
Organization costs (filing fees, state incorporation): separate $5,000 deduction under IRC 248 (same structure)

Deduction rules:

Total Startup Costs	Immediate Deduction	Amortized Over
$0-$5,000	Full amount	Nothing
$5,001-$50,000	$5,000	Remainder over 180 months
$50,001-$55,000	$5,000 minus phase-out	Remainder over 180 months
Over $55,000	$0	Full amount over 180 months

Phase-out example: $52,000 in startup costs. Phase-out: $52,000 - $50,000 = $2,000 excess. Immediate deduction: $5,000 - $2,000 = $3,000. Amortized: $52,000 - $3,000 = $49,000 over 180 months = $272.22/month.

Organization costs (IRC 248/709): Separate from startup costs, handled identically:

First $5,000 deductible immediately (phase-out above $50,000)
Remainder amortized over 180 months
Includes: state filing fees, legal fees for articles/operating agreement, organizational meeting costs

How do startup costs work in practice?

Hypothetical example

Round numbers. A new plumbing business. Pre-opening period: October through December. Business opens January 1.

Pre-opening costs (October-December):

Expense	Amount	Category
LLC formation (state fee + legal)	$500	Organization cost (IRC 248)
Operating agreement (lawyer)	$1,500	Organization cost
Market research (competitor analysis)	$800	Startup cost (IRC 195)
Website development	$3,000	Startup cost
Pre-opening advertising (Google Ads)	$2,000	Startup cost
Business cards, logo design	$500	Startup cost
Training course (licensing prep)	$1,200	Startup cost
Travel to evaluate service areas	$600	Startup cost
Insurance deposit (pre-opening)	$800	Startup cost
Total organization costs	$2,000
Total startup costs	$8,900

NOT startup costs (bought during pre-opening but separate):

Item	Amount	Treatment
Van	$40,000	Depreciable asset (Section 179)
Tools and equipment	$12,000	Depreciable asset (Section 179)
Initial parts inventory	$3,000	Inventory (COGS when sold)

These items aren’t startup costs. They’re deducted under their own rules (Section 179 for equipment, COGS for inventory). Including them in the IRC 195 calculation would incorrectly limit the deduction.

Year 1 deduction calculation:

Organization costs ($2,000):

Under $5,000: deduct full $2,000 immediately

Startup costs ($8,900):

First $5,000: deduct immediately
Remaining $3,900: amortize over 180 months
Monthly amortization: $3,900 / 180 = $21.67/month
Year 1 (12 months): $21.67 x 12 = $260

Total Year 1 startup/organization deduction: $2,000 + $5,000 + $260 = $7,260 Remaining to amortize over the next 14 years: $3,640

If the plumber hadn’t tracked startup costs separately: The $8,900 in startup costs gets lumped into Year 1 operating expenses. On audit, the IRS could:

Disallow the full $8,900 as a current-year deduction
Reclassify it as a startup cost
Allow only $5,260 in Year 1 ($5,000 + $260 amortization)
The remaining $3,640 would be amortized over the remaining 169 months
Result: $3,640 in disallowed deductions in Year 1

In practice, the IRS rarely audits the startup/operating distinction for amounts under $10,000. But for businesses with $20,000-$50,000 in pre-opening costs, the distinction matters.

Businesses that never open: If you spend $15,000 researching a business that you decide not to start, the startup costs are a capital loss (not a business deduction). They can’t be deducted under IRC 195 because the business never began. You can claim a capital loss on your personal return, subject to the $3,000/year limitation against ordinary income.

Election to amortize: The election to deduct and amortize startup costs under IRC 195 is made by claiming the deduction on your first tax return. No separate form is required. But if you want to elect to NOT deduct the $5,000 immediately (rare, but possible if you want to defer deductions to higher-income years), you must affirmatively make a different election. In nearly all cases, taking the immediate $5,000 deduction is optimal.

Practical tip for new business owners: Keep a separate folder or spreadsheet for “pre-opening expenses.” Date every expense. The date the business “begins” (first revenue, first customer, or first day open for business) is the dividing line:

Before that date: startup cost (IRC 195)
On or after that date: regular business deduction (Schedule C or Form 1120S)

The dividing line can be fuzzy. The IRS looks at when you “actively engaged in the trade or business.” Having your first paying customer is the clearest marker. Setting up the business, building the website, or getting licensed is typically still the startup phase.

Illustrative numbers only, not a real client and not advice for your facts.

Want this checked against your own situation?

Start with a Diagnostic: a CPA licensed in the US and Canada reads your file and answers in writing, three to four business days after you finish the questions. $250 for cross-border, $195 for a second opinion on a filed return, and it comes straight off the bill if we do the work after. Or book a free 15-minute fit call first.

Start a Diagnostic →Book a free call

Get the next cross-border guide by email

One or two plain-English guides a week on US-Canada tax. No spam, unsubscribe anytime.

Cite this page

Yarik Yarosh, CPA. "Business Startup Costs: IRC 195 Deduction and Amortization Rules." Blue Cloud CPA, September 5, 2026. https://bluecloudcpa.com/guides/small-business-startup-costs-irc-195-amortization

This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.