Plum vs SigFig - BrokerCue
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Broker Comparison

Plum vs SigFig

Compare Plum and SigFig side by side: fees, regulation, platforms.

Plum

Plum

Automated savings and beginner investors

Plum is a UK savings and investment app that automates saving, offers ISA, SIPP, mutual funds, and 3,000+ ind…

VS
SigFig

SigFig

Low-cost automated portfolio investors

SigFig is a US robo-advisor offering automated ETF portfolios, tax-loss harvesting, and free human advisor ac…

Head-to-head comparison

Plum vs SigFig
Feature Plum SigFig
Minimum deposit - -
Stock trading fee 2 free lifetime trades then: £0.50/trade (Basic), £0.15/trade (Plus), £0.05/trade (Boost), £0.00/trade (Max); FX fee 0.60% (Basic), 0.45% (Plus), 0.30% (Boost), 0.15% (Max) per trade -
Regulators FCA SEC
Best for Automated savings and beginner investors Low-cost automated portfolio investors
Markets & account
Stocks
-
ETFs
-
Bonds
-
Funds
Fractional Shares
Investment Plans
-
Ready Made Portfolios
Money Market Funds
-
Isa
-
Sipp
-
Savings Vaults
-

Pros & cons

Plum

Plum

Pros

  • Free Basic plan with automated savings and stock access
  • Stocks and Shares ISA and SIPP available on paid tiers
  • Fractional stock investing from £1
  • 3,000+ individual US company stocks available
  • 26 curated mutual funds from Vanguard and BlackRock
  • FCA-regulated with FSCS protection up to £85,000 on investments
  • Automated savings powered by spending analysis
  • Multiple savings account types including Cash ISA and Lifetime ISA

Cons

  • Individual stocks cannot be held inside the Stocks and Shares ISA - only mutual funds are ISA-eligible, leaving stock gains potentially subject to capital gains tax
  • Only 26 mutual funds available, a narrower range than dedicated investment platforms
  • Stacked fees on paid tiers: subscription fee plus platform fee plus fund manager fee
  • Two free lifetime trades then a per-trade charge on Basic and Plus plans
  • Crypto available only for EU/Cyprus users via Bitpanda; not available to UK customers
  • No demo or practice account
  • Fund access requires a paid subscription; Basic plan is limited
SigFig

SigFig

Pros

  • No advisory fee on first $10,000 managed
  • 0.25% annual fee is in line with leading robo-advisors
  • Free access to human investment advisors
  • Automatic rebalancing included
  • Tax-loss harvesting included
  • Low underlying ETF expense ratios (0.07%-0.15%)
  • No deposit, withdrawal, or rebalancing fees
  • Assets held at established custodians (Schwab, Fidelity) with SIPC protection

Cons

  • $2,000 minimum is higher than some competitors (Betterment has no minimum, Wealthfront starts at $500)
  • No cash management or savings account
  • No demo account to test the platform before investing
  • Fractional shares only available through dividend reinvestment, not initial purchases
  • Limited portfolio customization - model portfolios focused on ETFs and funds
  • No crypto investing
  • Company announced rebrand to Tandems in September 2025; long-term consumer product direction is uncertain
Plum

Plum

Plum is a UK savings and investment app that automates saving, offers ISA, SIPP, mutual funds, and 3,000+ individual stocks via a tiered subscription model.

Visit Plum Read review

Your capital is at risk. Other fees apply.

SigFig

SigFig

SigFig is a US robo-advisor offering automated ETF portfolios, tax-loss harvesting, and free human advisor access, with no fee on the first $10,000 managed.

Visit SigFig Read review

Your capital is at risk. Other fees apply.

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