IRC 195: $5,000 Startup Cost Deduction and 180-Month Rule

By Yarik Yarosh, CPA ·September 5, 2026 ·Updated October 16, 2026 ·7 min read

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

IRC 195 is the rule for money you spend before a business opens. In the year the business begins, you can deduct up to $5,000 of startup costs, and that $5,000 shrinks dollar for dollar once total startup costs pass $50,000, so it’s gone at $55,000. Whatever’s left is deducted in equal monthly amounts over 180 months (15 years), starting the month the business begins. You don’t file a separate election for this: the regulations treat you as having made it, and you’d have to opt out on a timely return to capitalize the costs instead. So the $8,000 a new owner spends on market research, training and pre-opening ads isn’t simply deducted on Schedule C. It’s split into the immediate deduction and the amortized remainder.

✓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 before opening, other than the cost of forming a corporation or partnership (those are organizational costs; see below)
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. For current guidance, see IRS Publication 583 (Starting a Business). 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.

Should a plumbing startup expense its van with 179 or bonus?

In a first year with thin profit, bonus is usually the easier fit. The $40,000 van and $12,000 of tools aren’t startup costs, and if they were acquired after January 19, 2025 they get 100% bonus by default. Section 179 can’t exceed your taxable income from active trades or businesses, so a new business with little profit may have to carry part of it forward.

W-2 wages count toward that limit, so if you worked a job earlier in the year, more of the 179 deduction may fit. Bonus has no income cap of its own, but a loss it creates is limited by the excess business loss rule ($313,000, or $626,000 joint, for 2025; $256,000 and $512,000 for 2026). The van also needs more than 50% business use, and if it’s rated at 6,000 pounds or less, first-year depreciation with bonus is capped at $20,200 for 2025 or $20,300 for 2026.

How much of your startup costs can you deduct in the first year?

Under IRC 195, you can deduct up to $5,000 of startup costs in the year your business begins operations, with the $5,000 reduced dollar-for-dollar for total startup costs exceeding $50,000. Remaining startup costs above the first-year deduction are amortized over 180 months (15 years) beginning in the month the business opens. Startup costs include market research, advertising before opening, employee training, travel to scout locations, and consultant fees for setting up the business. Organizational costs for forming a corporation or partnership get their own separate $5,000 first-year deduction with the same $50,000 phase-out and 180-month amortization, so you can potentially deduct up to $10,000 in total organizational and startup costs in year one.

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Cite this page

Yarik Yarosh, CPA. "IRC 195: $5,000 Startup Cost Deduction and 180-Month Rule." Blue Cloud CPA, September 5, 2026, updated October 16, 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.

IRC 195: $5,000 Startup Cost Deduction and 180-Month Rule

How do startup costs work in practice?

Should a plumbing startup expense its van with 179 or bonus?

How much of your startup costs can you deduct in the first year?

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