Interactive Brokers vs SoFi Invest Comparison: Fees, Features, and More (2026)
Interactive Brokers and SoFi Invest are two leading discount brokerages offering commission-free stock and ETF trading. Use this head-to-head comparison table to evaluate fees, features, trading tools, and account options to help you decide which broker is right for you in 2026.
| Feature | Interactive Brokers | SoFi Invest |
|---|---|---|
| Website | https://www.interactivebrokers.com/ | https://www.sofi.com/invest/ |
| Broker Type | Self-directed online discount broker | Discount (self-directed online brokerage + robo-advisor) |
| Trading: Stock & ETF? | Yes | Yes |
| ETF & Stock commission | IBKR Lite: $0 US-listed stocks/ETFs (US residents); IBKR Pro: $0.005/share fixed (min $1) or $0.0005–$0.0035/share tiered (min $0.35) | $0 commissions |
| Fractional Shares? | Yes (eligible US/CA/EU stocks & ETFs, from $1) | Yes ($5 min on select stocks/ETFs) |
| Percent Allocations? | Yes (TWS Rebalance Portfolio sets custom target %) | No |
| Crypto Trading? | Yes (spot crypto via Paxos/Zero Hash for eligible US IB LLC clients; permissions required; also futures/ETPs) | Yes. SoFi Crypto offers 28 cryptocurrencies (as of May 2026); requires SoFi Checking & Savings. |
| Crypto Fees | 0.12%–0.18% of trade value (monthly volume tiers), USD 1.75 min/order (capped at 1% of value); no added spreads/markups/custody fees; possible $0.15/mo Paxos fee | Tiered 1.90%/1.50%/1.25%/0.90% of trade value by monthly volume (<$1k/$1-5k/$5-10k/$10k+); possible ≤0.10% spread. |
| Options Trading? | Yes | Yes. Options trading available (long calls/puts, covered calls, cash-secured puts; 0DTE and IRAs). |
| Options Fee | US: Lite $0.65/contract ($1 min; Pro rates after 1k contracts/mo); Pro $0.15–$0.65/contract (volume/premium tiers), $1 min/order + exchange/reg/clearing fees | $0 commissions and $0 contract fees. Regulatory fees apply (e.g., ORF $0.02, OCC $0.025 per contract). |
| Bond Trading Available? | Yes (US Treasuries, corporates, munis, CDs, 1M+ global bonds) | No. Individual bonds not offered; exposure via bond ETFs and mutual funds only. |
| Receives payment for order flow (PFOF)? | Sometimes (Lite receives PFOF on US stocks/options; Pro generally avoids via SmartRouting) | Yes. Receives payment-for-order-flow revenue share via Apex Clearing. |
| Interface: Web trading? | Yes (Client Portal web; IBKR Mobile and GlobalTrader apps) | Yes. Full trading on SoFi mobile app (iOS/Android) and sofi.com website. |
| Desktop trading? | Yes; Trader Workstation (TWS) and IBKR Desktop. | No |
| API Trading? | Yes; TWS API and Web API for retail algorithmic trading. | No |
| Mutual Funds: Offered? | Yes | Yes |
| Total Mutual Funds | 50,000+ | 6,800+ |
| NTF Mutual Funds | 20,000+ | 6,800 |
| Non-NTF Fund Fee | Lesser of 3% of trade value or USD 14.95 per transaction (US). | 0.2% of purchase (max $20); 2% for interval/tender funds |
| Early Redemption Fee? | Yes (no IBKR fee); fund companies may charge per prospectus. | Yes (no SoFi short-term fee) |
| Redemption Hold (Days) | None by IBKR (0 days); fund prospectus may impose. | Fund-specific (CDSC varies by fund); no SoFi-imposed hold. |
| Early Redemption Fee | $0 from IBKR; funds may charge per prospectus. | Fund-specific CDSC (varies); SoFi charges none (purchase tx fee 0.2% max $20). |
| Accounts: Margin Accounts? | Yes (Cash, Margin, or Portfolio Margin; typically $2,000 equity for margin). | Yes (Self-Directed; apply, $2,000 min). |
| IRAs Offered? | Yes (Traditional, Roth, SEP, SIMPLE, Inherited, Rollover). | Yes: Traditional, Roth, and SEP IRAs. |
| HSAs Offered? | No | No |
| Money Market Sweep? | Yes (Insured Bank Deposit Sweep Program). | Yes (optional FDIC bank sweep via Apex). |
| CDs Offered? | Yes (brokered CDs). | No |
| Robo-Advisor: Offered | Yes | Yes |
| Robo-Advisor Service | Interactive Advisors | SoFi Automated Investing (Robo Investing) |
| Robo-Advisor Fees | 0.10%–0.75% AUM/year (varies by portfolio; IA 0.10%–0.20%, managers 0.25%–0.75%); no commissions | 0.25% annual wrap/advisory fee plus fund expenses; $50 min. |
| Basics: Headquarters | Greenwich, CT | San Francisco, CA |
| Year Founded | 1977 | 2011 |
| Clearing Firm | Self-clearing | Apex Clearing Corporation |
| Local Branches? | No | No |
| New Account Minimum | $0 | $0 |
Once you’ve chosen a broker, find high-performing, investable model portfolios at RecipeInvesting.com
Picked a Broker? Now Build Your Perfect Portfolio
Find high-performing, investable model portfolios (Tactical, Strategic, and Managed) at RecipeInvesting.com.
Compare Interactive Brokers to All Brokers
- Compare Interactive Brokers to Ally Invest
- Compare Interactive Brokers to Alpaca
- Compare Interactive Brokers to Axos Invest
- Compare Interactive Brokers to Charles Schwab
- Compare Interactive Brokers to E*Trade
- Compare Interactive Brokers to Fidelity
- Compare Interactive Brokers to Firstrade
- Compare Interactive Brokers to M1 Finance
- Compare Interactive Brokers to Merrill Edge
- Compare Interactive Brokers to Public.com
- Compare Interactive Brokers to Robinhood
- Compare Interactive Brokers to SoFi Invest
- Compare Interactive Brokers to SogoTrade
- Compare Interactive Brokers to Stash
- Compare Interactive Brokers to Tastytrade
- Compare Interactive Brokers to Tradestation
- Compare Interactive Brokers to Tradier
- Compare Interactive Brokers to Vanguard
- Compare Interactive Brokers to WeBull
- Compare Interactive Brokers to ZacksTrade