Section 179 Calculator 2025
Calculate your Section 179 tax deduction and maximize your business equipment tax savings
Business Information
Equipment Purchases
| Description | Category | Cost | Qualified | Actions |
|---|---|---|---|---|
Complete Guide to Section 179 Deduction
What is Section 179?
Section 179 of the IRS tax code allows businesses to deduct the full purchase price of qualifying equipment and software purchased or financed during the tax year. Instead of depreciating assets over several years, you can expense the entire cost in the year of purchase, providing immediate tax relief and improving cash flow.
2025 Section 179 Limits
- Maximum Deduction:$1,220,000 (up from $1,160,000 in 2024)
- Spending Cap (Phaseout):$3,050,000 (up from $2,890,000 in 2024)
- Bonus Depreciation:60% for 2025 (down from 80% in 2023)
- Business Income Limit:Cannot exceed total business taxable income
Qualifying Property
To qualify for Section 179, property must be:
- Tangible personal property (machinery, equipment, vehicles, furniture)
- Off-the-shelf computer software
- Qualified improvement property (improvements to interior of nonresidential buildings)
- Used more than 50% for business purposes
- Purchased and placed in service during the tax year
Specific Examples of Qualifying Equipment
✓ Qualifies
- • Manufacturing equipment
- • Office furniture and equipment
- • Computers and servers
- • Business vehicles under 6,000 lbs GVWR
- • Heavy SUVs and trucks (with limits)
- • Agricultural equipment
- • Restaurant equipment
- • Security systems
✗ Does Not Qualify
- • Buildings and land
- • Property used outside the US
- • Property used for lodging
- • Air conditioning and heating units
- • Property leased to others
- • Intangible assets
- • Property gifted or inherited
- • Used property from related parties
Disclaimer: This calculator provides estimates based on 2025 federal tax rules. Tax laws are complex and subject to change. State taxes, alternative minimum tax, and other factors may affect your actual tax situation. Always consult with a qualified tax professional before making equipment purchase decisions based on tax considerations.
About This Calculator
Calculate Section 179 tax deduction for business equipment and property purchases in 2025 (up to $1.22M). Input equipment cost, business income, and asset type to see immediate expensing deduction, phaseout threshold ($3.05M total purchases), taxable income limitation, and tax savings. Model scenarios: full deduction below $3.05M, dollar-for-dollar reduction above threshold, coordination with 60% bonus depreciation, and SUV/vehicle special limits (6,000+ lbs GVW). Calculate optimal strategy: Section 179 first (taxable income limited), then bonus (no income limit), then MACRS depreciation. Essential for small businesses maximizing first-year deductions on equipment, vehicles, computers, and qualified real property improvements (HVAC, roofs, fire/security systems). Expires 2025 unless extended.
Frequently Asked Questions
What is Section 179 and how much can I deduct in 2025?
**Section 179 deduction (IRC Section 179)**: Immediate expensing election allowing businesses to deduct **100% of qualifying equipment cost** in the year placed in service (instead of depreciating over 5-20 years). **2025 limits**: **Maximum deduction**: **$1,220,000** (indexed for inflation from $1.16M in 2023). **Phaseout threshold**: **$3,050,000** total equipment purchases. **Phase-out mechanism**: Dollar-for-dollar reduction once total purchases exceed $3.05M. **Example**: Purchased $3.2M equipment in 2025. Excess over threshold: $3.2M - $3.05M = $150k. **Reduced limit**: $1.22M - $150k = **$1.07M** (maximum Section 179 allowed). **Qualifying property**: 鉁?**Eligible**: Machinery, equipment, vehicles (>6,000 lbs GVW for full deduction), computers, office furniture, software, qualified real property improvements (HVAC, roofs, fire protection, security systems). 鉂?**Not eligible**: Buildings (structure itself), land, inventory held for sale, property used <50% business, property acquired from related parties. **Taxable income limitation**: Section 179 **cannot create a loss**. Limited to taxable business income (before Section 179). **Example**: Business income: $500k. Equipment purchase: $800k. **Section 179 allowed**: **$500k** (limited by income, cannot deduct full $800k). **Carryforward**: Unused $300k carries forward to 2026+ (until fully used or income sufficient). **Tax savings example** ($500k equipment, $600k business income, 35% tax rate): Section 179 deduction: **$500k** (full amount, within income limit). Tax savings: $500k 脳 0.35 = **$175,000** (Year 1 cash benefit). **Without Section 179** (5-year MACRS depreciation): Year 1 depreciation: 20% 脳 $500k = $100k. Tax savings Year 1: $100k 脳 0.35 = $35,000. **Extra benefit**: $175k - $35k = **$140,000 extra cash flow** in Year 1 (time value of money advantage).
What happens when my equipment purchases exceed the $3.05M threshold?
**Section 179 phase-out calculation** (2025 rules): **Threshold**: **$3,050,000** total qualifying property placed in service. **Phase-out**: **Dollar-for-dollar** reduction of $1.22M limit for every dollar over $3.05M. **Complete phase-out**: At **$4,270,000** total purchases ($1.22M + $3.05M), Section 179 = $0 (fully phased out). **Example scenarios**: **Scenario 1** (below threshold): Total 2025 purchases: **$2.5M** (below $3.05M). **Section 179 limit**: **$1.22M** (full limit available, no reduction). **Scenario 2** (partial phase-out): Total 2025 purchases: **$3.5M** (exceeds $3.05M by $450k). **Reduction**: $3.5M - $3.05M = **$450,000** excess. **Section 179 limit**: $1.22M - $450k = **$770,000** (reduced but still available). **Scenario 3** (complete phase-out): Total 2025 purchases: **$5M** (exceeds $3.05M + $1.22M). **Section 179 limit**: **$0** (fully phased out). **Must use**: 60% bonus depreciation + regular MACRS (no Section 179 benefit). **Strategic planning around threshold**: **Option 1: Split purchases across tax years**: Planned 2025 purchases: $4M total 鈫?Triggers phase-out. **Strategy**: Purchase $3M in 2025 (below threshold) + $1M in January 2026. **Result**: 2025 Section 179: $1.22M (full). 2026 Section 179: $1M+ (depends on 2026 limits). **Benefit**: Avoid phase-out, maximize deductions both years. **Option 2: Choose highest-value assets for Section 179**: Total 2025 purchases: $3.5M (phase-out applies, $770k limit available). Asset A: $1M machinery. Asset B: $800k vehicles. Asset C: $1.7M computers/furniture. **Strategy**: Elect Section 179 for **Asset A** ($1M, highest value within $770k limit 鈫?Take $770k). Use **60% bonus depreciation** for remaining $230k (Asset A) + full Assets B/C. **Calculation**: Section 179: $770,000 (Asset A partial). Bonus (60%): Asset A remaining $230k + Asset B $800k + Asset C $1.7M = $2.73M 脳 0.60 = **$1,638,000**. **Total Year 1 deduction**: $770k + $1,638k = **$2,408,000** (68.8% of $3.5M). **Option 3: Accept phase-out, use bonus depreciation**: Total 2025 purchases: $5M (Section 179 fully phased out). **Strategy**: Skip Section 179 entirely, rely on bonus. **Bonus (60%)**: $5M 脳 0.60 = **$3,000,000** Year 1 deduction. **Remaining**: $2M depreciated via MACRS over recovery periods. **Key difference vs Section 179**: Bonus has **no taxable income limitation** (can create loss). Section 179 **cannot exceed business income**. **Phase-out formula**: **Section 179 limit** = $1,220,000 - MAX($0, Total Purchases - $3,050,000). **Example**: $3.8M purchases. Reduction: MAX($0, $3.8M - $3.05M) = $750k. **Limit**: $1.22M - $750k = **$470,000**.
Can I use Section 179 for vehicles and what are the limits?
**Section 179 vehicle deduction rules** (2025): **Full deduction (no $28,900 limit)**: Vehicles with **Gross Vehicle Weight Rating (GVWR) >6,000 lbs** used **>50% business**. Includes: Trucks (F-150, Silverado, Ram 1500+), Large SUVs (Suburban, Expedition, Yukon, Tahoe, Sequoia, Armada), Vans (Sprinter, Transit, ProMaster). **Full deduction cap**: Up to **$1,220,000** Section 179 limit (or 60% bonus depreciation + MACRS). **Example**: 2025 Ford F-250 (GVWR 10,000 lbs), purchase price $80,000, business use 100%. **Section 179 deduction**: **$80,000** (full cost, Year 1). **Tax savings**: $80k 脳 35% = **$28,000** (immediate). **$28,900 limit** (luxury vehicle cap, applies to lighter vehicles): **Vehicles 鈮?,000 lbs GVWR** (most passenger cars, crossovers, small SUVs): **Section 179 limit**: **$28,900** (2025, indexed annually). **First-year depreciation total cap**: $20,200 (Section 179 + bonus + regular depreciation combined, if bonus not elected). **With bonus depreciation**: $20,200 + ($80k - $20.2k) 脳 60% bonus = $20,200 + $35,880 = **$56,080** max Year 1. **Examples**: **Example 1** (luxury sedan, $70k): GVWR: 4,500 lbs (under 6,000 lbs). **Year 1 deduction**: Section 179: $28,900 (capped). Remaining $41,100 鈫?60% bonus: $41,100 脳 0.60 = $24,660. **Total Year 1**: $28,900 + $24,660 = **$53,560** (76.5% of cost, but capped by $20,200 + bonus rules). **Actual allowed**: $56,080 (combined cap with bonus). **Example 2** (heavy SUV, $90k): GVWR: 6,400 lbs (over 6,000 lbs 鈫?**Qualifies for full deduction**). **Year 1 deduction**: Section 179: **$90,000** (full cost, no $28,900 limit). Tax savings: $90k 脳 35% = **$31,500**. **SUV special $28,900 sub-limit** (trap for >6,000 lbs SUVs): **Rule**: SUVs with GVWR 6,001-14,000 lbs 鈫?Section 179 capped at **$28,900** (not full cost). **Applies to**: Suburban, Tahoe, Yukon, Expedition, Sequoia, Land Cruiser (6,001-9,000 lbs GVWR range). **Does NOT apply to**: Trucks (F-150, Silverado, Ram), Vans (Sprinter, Transit), SUVs >14,000 lbs GVWR (rare). **Example**: 2025 Chevy Tahoe, $85,000, GVWR 7,300 lbs. **Section 179**: **$28,900** (SUV cap applies, even though >6,000 lbs). **Remaining**: $85k - $28.9k = $56,100. Bonus (60%): $56,100 脳 0.60 = $33,660. **Total Year 1**: $28,900 + $33,660 = **$62,560** (73.6% of cost). **Workaround**: Purchase **pickup truck** instead (same size/weight, no $28,900 limit). Ford F-150, $85,000, GVWR 7,000 lbs 鈫?**Full $85,000** Section 179 (no SUV restriction). **Business use requirement**: **>50% business use** required for Section 179. **Calculation**: (Business miles 梅 Total miles) 脳 100%. **Example**: Total miles: 20,000. Business miles: 12,000. **Business use**: 12k 梅 20k = **60%** 鉁?(qualifies). **Deduction**: $80k vehicle 脳 60% = **$48,000** (only business portion deductible). **Listed property rules**: Vehicles 鈮?,000 lbs = "listed property" 鈫?Strict recordkeeping (mileage log required). Vehicles >6,000 lbs = NOT listed property 鈫?Less strict (but still must substantiate >50% business use).
How do Section 179 and bonus depreciation work together?
**Coordination of Section 179 + Bonus + MACRS** (2025 stacking order): **Step 1: Section 179** (elect first, taxable income limited): Maximum deduction: **$1,220,000** (2025 limit). **Cannot exceed**: Taxable business income (cannot create loss). Unused amount **carries forward** to future years. **Step 2: Bonus depreciation** (60% in 2025, no income limit): Applies to **remaining basis** after Section 179. Rate: **60%** of cost (phasing down to 40% in 2026, 0% in 2027+). **Can create loss** (no taxable income limitation, unlike Section 179). **Step 3: Regular MACRS** (remaining basis): Depreciates leftover basis after Section 179 + Bonus. Uses normal MACRS schedules (5/7/15/27.5/39-year). **Example calculation** ($800k equipment, $500k business income): **Scenario A: Section 179 only** (income-limited): Section 179 elected: $800,000. **Income limit**: Business income $500,000 鈫?**Deduction capped at $500k**. **Carryforward**: $800k - $500k = **$300k** (unused, carries forward to 2026). **Year 1 deduction**: **$500,000** (all from Section 179). **Scenario B: Section 179 + Bonus (optimal strategy)**: **Step 1 - Section 179**: Elect $500,000 (max allowed by income limit). **Remaining basis**: $800k - $500k = $300,000. **Step 2 - Bonus (60%)**: $300k 脳 0.60 = **$180,000** (no income limit, creates loss). **Remaining basis**: $300k - $180k = $120,000. **Step 3 - MACRS** (5-year property, 20% Year 1): $120k 脳 0.20 = **$24,000**. **Total Year 1**: $500k (179) + $180k (bonus) + $24k (MACRS) = **$704,000** (88% of $800k). **Tax savings**: $704k 脳 35% = **$246,400** (Year 1 cash benefit). **Advantage over Scenario A**: $704k vs $500k = **$204k extra deduction** in Year 1 (bonus depreciation allows exceeding income limit). **Example with high income** ($1.5M equipment, $2M business income): **Step 1 - Section 179**: Elect **$1,220,000** (2025 max limit, well below $2M income). **Remaining**: $1.5M - $1.22M = $280,000. **Step 2 - Bonus (60%)**: $280k 脳 0.60 = **$168,000**. **Remaining**: $280k - $168k = $112,000. **Step 3 - MACRS** (5-year, 20%): $112k 脳 0.20 = **$22,400**. **Total Year 1**: $1.22M + $168k + $22.4k = **$1,410,400** (94% of $1.5M). **When to use Section 179 vs Bonus**: 鉁?**Prefer Section 179 if**: Business has **adequate income** to absorb full deduction. Want **simplicity** (no depreciation tracking after Year 1, fully expensed). Asset cost **<$1.22M** (can elect full amount). **Phaseout avoided** (total purchases <$3.05M). 鉁?**Prefer Bonus if**: Business has **low/no income** (bonus can create NOL carryforward, Section 179 cannot). **Large equipment purchases** (>$1.22M, bonus has no dollar limit). Want to **preserve Section 179** for specific assets (vehicles, computers) and use bonus for bulk machinery. **Strategic combination** (use both): **Example**: $2M equipment purchase, $800k business income. **Strategy**: Section 179: $800k (use full income limit for highest-priority assets). Bonus (60%): ($2M - $800k) = $1.2M 脳 0.60 = **$720k** (no income limit). **Total Year 1**: $800k + $720k = **$1,520,000** (76% of $2M). **If using Section 179 alone**: Limited to $800k (income cap) 鈫?Lose $720k deduction in Year 1. **Bonus depreciation phase-out timeline**: 2023: 80% (expired). 2024: 80%. 2025: **60%** 鈫?Current. 2026: **40%**. 2027+: **0%** (unless Congress extends). **Action**: Maximize equipment purchases in 2025 (60% bonus) before 2026 reduction (40%).
What qualifies as Section 179 property and what special rules apply to real property?
**Qualifying tangible personal property** (full Section 179 deduction): 鉁?**Machinery & equipment**: Manufacturing equipment, construction equipment, restaurant equipment (ovens, refrigerators), medical equipment, agricultural machinery. 鉁?**Vehicles**: Trucks/vans >6,000 lbs GVWR (full deduction), SUVs 6,001-14,000 lbs ($28,900 limit), cars/small SUVs 鈮?,000 lbs ($28,900 limit). 鉁?**Office equipment**: Computers, printers, copiers, desks, chairs, filing cabinets. 鉁?**Technology**: Software (off-the-shelf, purchased), servers, networking equipment, point-of-sale systems. 鉁?**Storage**: Shelving, racking systems, grain bins/silos (agricultural). **Qualified Real Property** (limited Section 179, since 2018 TCJA): 鉁?**Eligible improvements** (to **nonresidential buildings** only, after initial occupancy): **HVAC**: Heating, ventilation, air conditioning systems (replacements/upgrades). **Roofs**: Roof replacements, repairs (not part of new building construction). **Fire protection/alarm systems**: Sprinklers, fire alarms, smoke detectors. **Security systems**: Burglar alarms, surveillance cameras, access control. **Example**: Restaurant replaces HVAC system ($150k) and installs new security cameras ($20k) in 2025. **Section 179**: $150k + $20k = **$170,000** (full deduction, Year 1). **Tax savings**: $170k 脳 35% = **$59,500**. 鉂?**NOT eligible real property**: **Building structure itself** (walls, floors, foundation) 鈫?Must use 39-year MACRS. **Elevators/escalators** 鈫?Not qualified real property. **Internal structural framework** 鈫?Not qualified. **Land improvements** (parking lots, sidewalks, landscaping) 鈫?Not qualified for Section 179 (but may qualify for 15-year MACRS + bonus depreciation). **Example**: $2M new office building construction. **Section 179**: **$0** (building structure not eligible). **Depreciation**: 39-year straight-line MACRS = $51,282/year. **If** same $2M includes $400k HVAC + $100k fire/security systems 鈫?Those portions eligible for Section 179. **Section 179 for HVAC**: $400k (Year 1 deduction). **Building structure**: $1.5M 梅 39 years = $38,462/year. **Total Year 1**: $400k + $38,462 = **$438,462** (vs $51,282 without Section 179 = **8.5x higher** Year 1 deduction). **"After placed in service" requirement**: Qualified real property must be **improvement to existing building** (not part of original construction). **Example 1** (qualifies): Building constructed 2020, HVAC replaced 2025 鈫?**Qualifies** for Section 179. **Example 2** (does NOT qualify): New building construction 2025, includes HVAC as part of original buildout 鈫?**Does NOT qualify** (use 39-year depreciation). **Workaround**: Complete building shell first (original construction, 39-year). Install HVAC/fire/security as **separate contract** after occupancy 鈫?Qualifies for Section 179 (treated as "improvement"). **Software deduction rules**: 鉁?**Off-the-shelf software** (purchased): **Section 179 eligible** (up to $1.22M). **Example**: QuickBooks, Microsoft Office, Adobe Creative Cloud ($10k) 鈫?Full Section 179 Year 1. 鉂?**Custom software** (developed internally): **Not eligible** for Section 179 (amortized over 36 months or capitalize). **Cloud/SaaS subscriptions**: **Not depreciable** (expensed as ordinary business expense on Schedule C, not Section 179). **Used property** (since 2018 TCJA change): 鉁?**Now eligible** for Section 179 (pre-2018: new property only). **Requirement**: Cannot be purchased from **related party** (family member, >50% common ownership entity). **Example**: Purchase used forklift ($30k) from unrelated party 鈫?**Section 179: $30,000** (full deduction). **Business use requirement**: **>50% business use** required for Section 179. **Example**: Equipment used 40% business, 60% personal 鈫?**Not eligible** (must use regular depreciation, business portion only). **Recapture risk** (if business use drops 鈮?0% in later years): **Year 1**: 100% business use, claim $100k Section 179. **Year 3**: Business use drops to 40% (<50%). **Recapture**: Must **repay tax benefit** on excess depreciation (difference between Section 179 taken vs MACRS allowed). **Calculation**: Section 179 taken: $100,000. MACRS allowed (3 years at 40% business): Year 1-3 MACRS = $28k total. **Recapture income**: $100k - $28k = **$72,000** (added to Year 3 taxable income). **Prevention**: Maintain detailed usage logs proving >50% business use throughout asset life.
What are common Section 179 mistakes and how can I maximize the deduction?
**Mistake #1: Exceeding taxable income limit** (most common): **Error**: Electing $1M Section 179 when business only has $400k taxable income. **Consequence**: **$600k disallowed** in Year 1 (carries forward to 2026+, but delays cash benefit). **Correct strategy**: Elect **$400k** Section 179 (match taxable income). Use **60% bonus depreciation** for remaining $600k ($600k 脳 0.60 = $360k, no income limit). **Total Year 1**: $400k + $360k = **$760k** (vs $400k if using Section 179 alone). **Mistake #2: Ignoring $28,900 SUV limit**: **Error**: Assuming heavy SUV (7,000 lbs GVWR) qualifies for **full** Section 179 deduction. **Reality**: SUVs 6,001-14,000 lbs 鈫?**$28,900 cap** (only trucks/vans get full deduction). **Example**: $90k Suburban (7,200 lbs GVWR). **Incorrect assumption**: $90,000 Section 179. **Actual allowed**: $28,900 (Section 179) + $36,660 (60% bonus on remaining $61,100) = $65,560 total. **Lost deduction**: $90k - $65.6k = **$24,400 Year 1** (must depreciate over 5 years). **Fix**: Purchase **pickup truck** instead (F-150, Silverado, Ram) 鈫?Same weight class, **no $28,900 limit**, full Section 179 allowed. **Mistake #3: Forgetting to elect Section 179 on tax return**: **Error**: Purchasing $500k equipment but **not filing Form 4562** (Depreciation and Amortization). **Default**: IRS treats as regular MACRS depreciation (5-year property = $100k Year 1, 20%). **Lost benefit**: $500k - $100k = **$400k** less deduction in Year 1 = $140,000 extra tax (35% bracket). **Fix**: **Form 4562 required**: List each Section 179 asset (description, cost, business use %). Must be filed **with original tax return** (not amended return, unless timely filed). **Deadline**: Tax return due date (March 15 for S-corps/partnerships, April 15 for sole proprietors). **Mistake #4: Buying assets in December without considering phase-out**: **Error**: Purchasing $3.5M equipment all in December 2025 (triggers phase-out). **Phase-out calculation**: Excess: $3.5M - $3.05M = $450k. **Section 179 limit**: $1.22M - $450k = **$770k** (reduced by $450k). **Lost opportunity**: If split $1.75M in 2025 + $1.75M in January 2026 鈫?Full $1.22M limit both years = **$2.44M total** (vs $770k + bonus). **Fix**: Monitor cumulative purchases quarterly, plan year-end timing. **Mistake #5: Claiming Section 179 on ineligible property**: **Error**: Electing Section 179 on **building structure** ($500k commercial building). **Reality**: Buildings (walls, foundation, structure) = **Not eligible** (must use 39-year MACRS = $12,821/year). **Allowed**: HVAC ($100k), fire/security ($50k) = **$150k** eligible for Section 179. **IRS adjustment**: $500k claimed - $150k allowed = **$350k disallowed** + penalties. **Fix**: Separate construction invoices (building structure vs HVAC/mechanical/security). **Maximization strategies**: **Strategy #1: Coordinate with bonus depreciation**: **Scenario**: $2M equipment, $1M taxable income. **Optimal**: Section 179: $1M (use full income). Bonus (60%): ($2M - $1M) 脳 0.60 = $600k. **Total Year 1**: $1.6M (80% of cost). **Suboptimal**: Section 179 only: $1M (capped by income). **Lost**: $600k deduction delayed to future years. **Strategy #2: Allocate Section 179 to highest-value assets**: **Scenario**: $1.5M purchases (within $3.05M threshold), $800k income. Asset A: $600k machinery. Asset B: $500k vehicles. Asset C: $400k computers. **Optimal**: Section 179 for **Asset A** ($600k, highest value, uses most of $800k income limit). Bonus (60%) for B+C: ($900k) 脳 0.60 = $540k. **Total Year 1**: $600k + $540k = **$1,140,000** (76%). **Strategy #3: Maximize business use percentage**: **Scenario**: Vehicle used 48% business (does not qualify for Section 179). **Strategy**: Increase business use to **51%** (purchase second personal vehicle for non-business use, shift all business to primary vehicle). **Result**: Qualifies for Section 179 鈫?Deduct $80k 脳 51% = **$40,800** Year 1 (vs $4,080 MACRS). **Tax savings**: $36,720 extra = **$12,852** (35% bracket). **Strategy #4: Time purchases around phase-out threshold**: **Scenario**: Planned $3.3M equipment (would trigger $250k phase-out). **Strategy**: Purchase **$3M in 2025** (below $3.05M threshold) + **$300k in Jan 2026**. **Benefit**: 2025 Section 179: $1.22M (full). 2026 Section 179: $300k (or 2026 limit if higher). **Vs original**: $970k (phased-out 2025) + bonus/MACRS on remainder. **Extra deduction**: $250k Section 179 preserved = **$87,500 tax savings**.