US Crypto Capital Gains, 3.8% NIIT & 50-State Tax Calculators (2026/2027)
Calculate your exact 2026 federal short-term and long-term capital gains tax under Rev. Proc. 2025-32, 3.8% Net Investment Income Tax (Form 8960), state income tax across all 50 US states + DC, and $3,000 ordinary income loss offset (IRC § 1211(b)).
- IRC Section
- 26 U.S.C. §§ 61, 1001, 1012, 1222, 1411, 6045
- IRS Form & Line
- IRS Form 8949 (Parts I & II) → Schedule D (Form 1040)
- 2026 Federal Rate
- 0% / 15% / 20% LTCG (>365d) · 10%–37% STCG (Rev. Proc. 2025-32)
- 3.8% NIIT Applicability
- 3.8% Form 8960 Surtax > $200k Single / $250k MFJ (IRC § 1411)
- 1099-DA Box Mapping
- Box 1f Proceeds → Col (d) · Box 1g Basis → Col (e) · Box 3b/9
- Statute of Limitations / Rev. Proc.
- 3 Yrs Standard (IRC § 6501(a)) · 6 Yrs >25% Omission · Rev. Proc. 2024-28
▸ Inspect 1200×675 CPA Statutory Workpaper Summary Card (US Crypto Tax Calculator 2026: Federal, St) WebP 1200×675
Combined Federal STCG/LTCG + 3.8% NIIT + 50-State + $3,000 Loss Offset Calculator
IRS Statutory Rule: US Crypto Capital Gains, 3.8% NIIT & 50 is governed in 2026 by IRS Rev. Proc. 2025-32 (0%/15%/20% long-term brackets plus 3.8% NIIT) and mandatory Form 1099-DA gross proceeds reporting.
Specialized Statutory Tax Simulators
IRS Statutory Rule: US Crypto Capital Gains, 3.8% NIIT & 50 establishes the following verified 2026 benchmark values under “Specialized Statutory Tax Simulators”: 0% ($0 – $49,450 · $0 – $98,900), 15% ($49,450 – $545,500 · $98,900 – $613,700), 20% (Over $545,500 · Over $613,700).
365-Day Holding Period Simulator (IRC § 1222)
Compare selling today at short-term ordinary rates (10%–37%) vs waiting past day 365 for long-term rates (0%/15%/20%) plus state deductions.
Launch STCG vs LTCG Tool →Spot Crypto vs ETF Wash Sale & Loss Harvesting
Simulate tax-loss harvesting on spot BTC/ETH (exempt from § 1091) vs Spot ETFs (IBIT/FBTC subject to 30-day wash sale disallowance).
Launch Loss Harvesting Tool →3.8% NIIT Form 8960 MAGI Calculator
Compute the exact 3.8% Net Investment Income Tax surtax above $200,000 Single / $250,000 Married Filing Jointly unindexed thresholds.
Launch Form 8960 Calculator →$3,000 Capital Loss Carryforward Schedule D Tool
Model multi-year Schedule D capital loss netting, $3,000 annual W-2 income deductions, and unlimited lifetime carryforwards under IRC § 1212(b).
Launch Carryforward Tool →Form 1040-ES Quarterly Safe Harbor Calculator
Avoid IRS underpayment penalties on large crypto gains using the 100% / 110% prior-year tax safe harbor or Form 2210 annualized installments.
Launch 1040-ES Calculator →Gas Fee & Transfer Fee Cost Basis Adjuster
Calculate how Ethereum/Bitcoin network gas fees increase acquisition basis (Box 1g) or reduce disposition gross proceeds (Box 1f).
Launch Gas Basis Adjuster →2026 Federal Short-Term vs Long-Term Crypto Tax Brackets (Rev. Proc. 2025-32)
Under IRC § 1222 and Rev. Proc. 2025-32, digital assets held for 365 days or less are taxed as Short-Term Capital Gains at federal ordinary income rates (10% to 37%). Digital assets held for more than 1 year (> 365 days) qualify for preferential Long-Term Capital Gains rates (0%, 15%, or 20%), plus the 3.8% Net Investment Income Tax (NIIT) on Form 8960 when Modified Adjusted Gross Income (MAGI) exceeds $200,000 (Single/HoH) or $250,000 (Married Filing Jointly).
Part I — 2026 Long-Term Capital Gains Tax Brackets (> 365 Days · Form 8949 Part II)
| LTCG Rate | Single Taxable Income | Married Filing Jointly | Head of Household | Married Filing Separately |
|---|---|---|---|---|
| 0% | $0 – $49,450 | $0 – $98,900 | $0 – $66,200 | $0 – $49,450 |
| 15% | $49,450 – $545,500 | $98,900 – $613,700 | $66,200 – $579,600 | $49,450 – $306,850 |
| 20% | Over $545,500 | Over $613,700 | Over $579,600 | Over $306,850 |
Part II — 2026 Short-Term Capital Gains & Ordinary Crypto Income Brackets (<= 365 Days · Form 8949 Part I)
| Ordinary / STCG Rate | Single Taxable Income | Married Filing Jointly | Head of Household | Married Filing Separately |
|---|---|---|---|---|
| 10% | $0 – $12,400 | $0 – $24,800 | $0 – $17,700 | $0 – $12,400 |
| 12% | $12,400 – $50,400 | $24,800 – $100,800 | $17,700 – $67,450 | $12,400 – $50,400 |
| 22% | $50,400 – $105,700 | $100,800 – $211,400 | $67,450 – $105,700 | $50,400 – $105,700 |
| 24% | $105,700 – $201,775 | $211,400 – $403,550 | $105,700 – $201,750 | $105,700 – $201,775 |
| 32% | $201,775 – $256,225 | $403,550 – $512,450 | $201,750 – $256,200 | $201,775 – $256,225 |
| 35% | $256,225 – $640,600 | $512,450 – $768,700 | $256,200 – $640,600 | $256,225 – $384,350 |
| 37% | Over $640,600 | Over $768,700 | Over $640,600 | Over $384,350 |
2026 Taxpayer Scenario Comparison Matrix (Single $75k vs Married $250k vs High-Earner $600k+)
The statutory matrix below compares 2026 combined Federal, 3.8% Net Investment Income Tax (IRC § 1411 Form 8960), and Federal Baseline (0% State Tax) tax liabilities across three representative US taxpayer profiles:
| Statutory Dimension / Tax Metric | Profile A: Single Filer ($75,000 Base AGI + $15,000 Crypto Gain) | Profile B: Married Joint ($250,000 Base AGI + $50,000 Crypto Gain) | Profile C: High-Earner ($600,000+ Base AGI + $250,000 Crypto Gain) |
|---|---|---|---|
| 2026 Federal Ordinary / Short-Term Rate (<= 365 Days) | 22.00% Federal (22.00% Combined) | 24.00% + 3.80% NIIT (27.80% Combined) | 37.00% + 3.80% NIIT (40.80% Combined) |
| 2026 Federal Long-Term Capital Gains Rate (> 365 Days) | 15.00% Federal (15.00% Combined) | 15.00% + 3.80% NIIT (18.80% Combined) | 20.00% + 3.80% NIIT (23.80% Combined) |
| Estimated Tax on Short-Term vs Long-Term Disposition | $3,300 (ST) vs $2,250 (LT) | $13,900 (ST) vs $9,400 (LT) | $102,000 (ST) vs $59,500 (LT) |
| Long-Term Holding Period Tax Savings (> 1 Year) | $1,050 Saved (7.00% Spread) | $4,500 Saved (9.00% Spread) | $42,500 Saved (17.00% Spread) |
| Form 1099-DA & Form 8949 Reporting Requirement | Form 8949 Box A/D (Covered) or Box B/E (Noncovered) -> Schedule D | Form 8949 + Schedule D + Form 8960 (3.8% NIIT on $50k over $250k MFJ) | Form 8949 + Schedule D + Form 8960 + Rev. Proc. 2024-28 Specific ID Ledger |
Form 1099-DA Deadlines
2026 Trades: Covered cost basis (Box 1g) mandatory starting Jan 1, 2026 (furnished Feb 16, 2027).
Universal Pooling Banned
Pig-Butchering Loss Relief
2026 IRS Compliance Chain, Form 1099-DA Workflow & Disallowance Rules: US Crypto Capital Gains, 3.8% NIIT & 50
IRS Statutory Rule: US Crypto Capital Gains, 3.8% NIIT & 50 is governed in the 2026 tax year by IRC §§ 1001, 1221, and 1222, IRS Notice 2014-21, Rev. Proc. 2024-28, and Rev. Proc. 2025-32, taxing short-term dispositions (≤ 365 days) at ordinary rates up to 37% and long-term gains (> 365 days) at 0%, 15%, or 20% plus the 3.8% Net Investment Income Tax (NIIT).
- Segregate Per-Wallet Cost Basis Pools (Rev. Proc. 2024-28): The taxpayer maintains separate FIFO or Specific-ID cost basis ledgers for each custodial broker and each self-custodied wallet address.
- Ingest Broker Form 1099-DA Statements: By February 15, custodial exchanges issue Form 1099-DA reporting gross proceeds (Box 1f) and covered cost basis for each digital asset sale or swap.
- Classify Ordinary Income vs. Capital Gains: Staking rewards, mining payouts, and airdrops are recorded on Schedule 1 / Schedule C at fair market value in USD at the exact timestamp of dominion and control.
- Populate IRS Form 8949 (Parts I & II): Dispositions are separated into Part I (Short-Term ≤ 365 days) and Part II (Long-Term > 365 days) using Checkboxes G, H, I (short-term) or J, K, L (long-term).
- Apply State Income Tax Conformity: Net capital gains flow from federal Schedule D to the taxpayer's state return (0% in AK, FL, NV, NH, SD, TN, TX, WA, WY vs. up to 13.3% in California).
- Answer the Form 1040 Digital Asset Question: The filer checks “Yes” or “No” on page 1 of Form 1040 and retains cryptographic transaction logs for the 3-to-6-year IRS statute of limitations (IRC § 6501).
Statutory Myth Debunked (Restriction): A tax-free crypto-to-crypto or BTC-to-USDT stablecoin swap under IRC § 1031 like-kind exchange rules does not exist: Congress restricted IRC § 1031 exclusively to real property under the Tax Cuts and Jobs Act, making every coin-to-coin trade, DeFi liquidity swap, and stablecoin conversion an immediately taxable disposition under IRC § 1001.
To model exact liabilities for US Crypto Capital Gains, 3.8% NIIT & 50, run the 2026 federal and 50-state crypto capital gains tax calculator incorporating IRS Rev. Proc. 2025-32 brackets (0%, 15%, 20%) plus 3.8% NIIT (short-term vs long-term 365-day holding threshold), verify reporting codes in our interactive IRS Form 1099-DA box-by-box reconciliation guide under Treasury Decision 10000 (89 FR 56480) gross proceeds reporting (Form 8949 Part I and Part II adjustment codes), and review wallet-by-wallet cost basis allocation under Rev. Proc. 2024-28 (mandatory per-account FIFO/Specific ID tracking from January 1, 2026).
2026 IRS Form 1099-DA & 8949 Filing Readiness Tracker
0 / 4 Complete2026 IRS Rev. Proc. & State Tax Rate Dispatch
Title 26 AlertsReceive instant CPA alerts when the IRS issues new Form 1099-DA guidance, Internal Revenue Bulletins, or 50-state capital gains rate amendments—or download this page's statutory workpaper `.txt` file.
Statutory Frequently Asked Questions & IRS Citations
IRS Statutory Rule: US Crypto Capital Gains, 3.8% NIIT & 50 is governed in 2026 by IRS Rev. Proc. 2025-32 (0%/15%/20% long-term brackets plus 3.8% NIIT) and mandatory Form 1099-DA gross proceeds reporting.
How does the IRS tax cryptocurrency in 2026 and 2027?
Under IRS Notice 2014-21 and IRC § 1001, convertible virtual currency is treated as property. Selling crypto for USD, swapping one cryptocurrency for another (including BTC to USDC), or spending crypto for goods/services triggers a capital gain or loss on Form 8949 and Schedule D. Rewards from staking (Rev. Rul. 2023-14), mining, airdrops (Rev. Rul. 2019-24), and wages are taxed as ordinary income upon acquiring dominion and control.
Why is Box 1g (Cost Basis) blank on my Form 1099-DA?
Under Treasury Decision 10000 (IRC § 6045), brokers only report mandatory cost basis in Box 1g for 'covered digital assets' acquired on or after January 1, 2026 inside that same broker account. Any crypto acquired before 2026 or transferred in from an external self-custody wallet (Box 9 checked / Box 3b noncovered) leaves Box 1g blank. You must supply your verified wallet-by-wallet cost basis in Column (e) of Form 8949 so you do not overpay tax on 100% of gross proceeds.
What is the maximum 2026 federal tax rate on long-term vs short-term crypto gains?
Under Rev. Proc. 2025-32, short-term crypto gains (held 365 days or less) are taxed at ordinary federal rates from 10% to 37%, plus the 3.8% Net Investment Income Tax (NIIT, Form 8960) for high earners (40.8% max federal). Long-term crypto gains (held > 365 days) are taxed at 0%, 15%, or 20%, plus 3.8% NIIT above $200,000 Single / $250,000 Married Filing Jointly (23.8% max federal), before state income taxes.
What are the exact 2026 Federal Long-Term Capital Gains and 3.8% NIIT thresholds for cryptocurrency?
Under IRS Revenue Procedure 2025-32, the 2026 0% Long-Term Capital Gains rate applies up to $49,450 of taxable income for Single filers ($98,900 Married Filing Jointly; $66,200 Head of Household). The 15% rate applies up to $545,500 Single ($613,700 MFJ), and the 20% top rate applies above those levels. Additionally, the 3.8% Net Investment Income Tax (IRC § 1411, Form 8960) applies when MAGI exceeds $200,000 Single or $250,000 MFJ.
How does Rev. Proc. 2024-28 change cryptocurrency cost basis tracking for 2026 tax returns?
IRS Revenue Procedure 2024-28 requires taxpayers to track digital asset cost basis on a wallet-by-wallet or account-by-account basis rather than using a single universal pool across all exchanges. Each disposition reported on Form 8949 must pull cost basis from lots actually held inside the specific wallet or custodial broker executing the trade.
When must a taxpayer check 'Yes' to the Form 1040 Digital Asset Question for the 2026 tax year?
You must check 'Yes' on Form 1040 page 1 if you received digital assets as a reward, award, or payment (staking, mining, airdrops, wages) or sold, exchanged, or otherwise disposed of a digital asset in 2026. You may check 'No' if your only crypto activity was holding existing assets, transferring crypto between your own wallets, or purchasing crypto strictly with US dollars.