Broker Best for Minimum Fees Auto-rebalance
Wealthfront Set-and-forget savers who want tax-loss harvesting $500 0.25% / yr Yes Open account
Public DIY investors who want fractional ETFs & transparency $1 $0 commission Manual Open account
M1 Finance Builders who want control over allocation "pies" $100 $0 commission Yes Open account
Betterment Beginners who want goal-based automated investing $0 0.25% / yr Yes Open account
SoFi Invest All-in-one banking + investing relationships $0 $0 commission Auto plan Open account
Fidelity Go Trust-brand seekers who want a big-bank experience $10 0.35% / yr* Yes Open account

Each, in a little more detail.

Wealthfront
Robo-advisor · Tax-optimized

Fully automated investing across diversified index ETFs, with daily tax-loss harvesting at the account level. The sensible choice for savers who want to set it and forget it, forever.

Strengths
  • Daily tax-loss harvesting
  • Diversified ETF allocation
  • High-yield cash account option
  • Clean, opinionated UX
Tradeoffs
  • 0.25% advisory fee
  • $500 minimum to start
  • No human advisor tier
Who it's for
The saver who wants to automate the investing decision entirely and optimize tax efficiency in a taxable account. Our default pick.
Public
Brokerage · Fractional ETFs

A brokerage that rejected payment-for-order-flow and built around transparency. Fractional index ETFs mean you can start with a single dollar, not a round lot.

Strengths
  • Fractional shares from $1
  • No payment-for-order-flow
  • Clean mobile interface
  • Recurring investment plans
Tradeoffs
  • Self-directed, no advisor
  • No automated rebalancing
  • Social feed can be a distraction
Who it's for
The DIY investor who wants to pick a few index ETFs (VOO, VTI, SCHD) and dollar-cost-average in without commissions.
M1 Finance
Pie investing · Hybrid

Build a custom "pie" of index ETFs at whatever weights you like. M1 handles fractional buys and automatic rebalancing on every deposit. For the saver who wants control without chores.

Strengths
  • Custom portfolio allocation
  • Automatic rebalancing
  • Fractional share support
  • Dynamic deposit distribution
Tradeoffs
  • $100 minimum to start
  • Trades execute in windows, not real-time
  • No tax-loss harvesting on free tier
Who it's for
The reader who has a thesis ("60% US index, 20% international, 20% bonds") and wants the platform to enforce it every month.
Betterment
Robo-advisor · Goals-based

The original robo-advisor. Pick a goal (retirement, house, general), answer a few questions, and Betterment builds a diversified index-ETF portfolio with automated rebalancing.

Strengths
  • $0 minimum
  • Goal-based planning tools
  • Tax-loss harvesting
  • Optional premium tier with human advisors
Tradeoffs
  • 0.25% advisory fee
  • Less flexibility than DIY brokerages
Who it's for
The beginner who wants gentle hand-holding, a clear goal view, and the option to add a human advisor later.
SoFi Invest
Brokerage · All-in-one finance

Investing tucked inside a larger banking relationship. Fractional shares, an automated "Robo" option, and an ecosystem that handles banking, loans, and investing under one login.

Strengths
  • $0 minimum, $0 commissions
  • Fractional shares from $5
  • Banking + investing integration
  • Automated "Robo" option available
Tradeoffs
  • Smaller ETF selection than pure brokerages
  • Feature breadth can feel diluted
Who it's for
The reader who wants one app for checking, savings, and index investing — and is willing to trade a little depth for the consolidation.
Fidelity Go
Robo-advisor · Established incumbent

The robo tier of a seventy-five-year-old brokerage. Portfolios built with Fidelity Flex funds that carry no underlying expense ratio — you pay one advisory fee and nothing else.

Strengths
  • Zero-expense-ratio Flex funds
  • Free for balances under $25,000
  • Trust of a seventy-five-year-old firm
Tradeoffs
  • 0.35% fee above $25k (higher than Betterment/Wealthfront)
  • Only invests in Fidelity Flex funds
  • No tax-loss harvesting
Who it's for
The reader who prizes institutional trust and has a smaller balance — Fidelity Go is genuinely free under $25k.
— Full disclosure —

What our partnerships mean.

Each broker above pays Index Instead a one-time commission when you open a funded account through our link. Typical range: $50–$200, depending on broker and funding amount.

This does not affect the order we list them in. We ranked them by fit, not by payout. Wealthfront pays us about the same as Public and M1; Betterment slightly less; Fidelity varies.

We did not include brokers whose business model we disagree with — high-fee active-managed funds, crypto-primary platforms, or payday-loan adjacent services. We curate, and we will say so.

Nothing here is financial advice. Past performance does not guarantee future results. Index investing does not protect against loss in declining markets.