Best Brokers With Fixed Spreads 2025

Discover the top brokers that offer the stability of fixed spreads, providing predictable trading costs and shielding your strategy from sudden market shifts.

Author Image Writer
Paul Holmes
Checker Image Fact Checker
Tobias Robinson
Editor Image Editor
James Barra
Brokers With:
Fixed Spread
Showing top 5 of 7 matching brokers.
  1. 1
    Trust Platform Assets Fees Accounts Research Education Mobile Support 3.4
    eToro is a platform for social investing that provides options for both short and long-term trading on stocks, ETFs, options, and crypto. The platform is recognized for its easy-to-use, community-oriented interface and reasonable fees. With oversight from FINRA and SIPC, and used by millions globally, eToro is a reputed name in the industry. Trading on eToro is facilitated by eToro USA Securities, Inc.
    Demo Account
    Yes
    Minimum Deposit
    $100
    Minimum Trade
    $10
    Leverage
    No
    Copy Trading
    Yes
    Regulator
    SEC, FINRA
    Instruments
    Stocks, Options, ETFs, Crypto
    Platforms
    eToro Trading Platform & CopyTrader
    Account Currencies
    USD
    Automated Trading
    No
    AI
    No
    Guaranteed Stop Loss
    No
  2. 2
    Trust Platform Assets Fees Accounts Research Education Mobile Support 4.9
    Founded in 2006, AvaTrade is a top forex and CFD broker trusted by over 400,000 traders. Regulated in 9 regions, it handles more than 2 million trades monthly. AvaTrade offers platforms like MT4, MT5, and WebTrader, with over 1,250 instruments. Traders of all levels can explore CFDs, AvaOptions, and AvaFutures for short-term trading. AvaTrade provides excellent education and 24/5 multilingual customer support for a complete trading experience.
    Demo Account
    Yes
    Minimum Deposit
    $300$100
    Minimum Trade
    0.01 Lots
    Leverage
    1:30 (Retail) 1:400 (Pro)
    Copy Trading
    Yes
    Regulator
    ASIC, CySEC, FSCA, ISA, CBI, FSA, FSRA, BVI, ADGM, CIRO, AFM
    Instruments
    CFDs, Forex, Stocks, Indices, Commodities, ETFs, Bonds, Crypto, Spread Betting, Futures
    Platforms
    WebTrader, AvaTradeGO, AvaOptions, AvaFutures, MT4, MT5, AlgoTrader, TradingCentral, DupliTrade
    Account Currencies
    USD, EUR, GBP, CAD, AUD
    Automated Trading
    Expert Advisors (EAs) on MetaTrader
    AI
    No
    Guaranteed Stop Loss
    No
  3. 3
    Trust Platform Assets Fees Accounts Research Education Mobile Support 4.8
    Pepperstone, established in Australia in 2010, is a highly-regarded forex and CFD broker serving more than 400,000 international clients. It provides access to over 1,300 instruments through leading trading platforms such as MT4, MT5, cTrader, and TradingView, while keeping fees relatively low and transparent. The company is regulated by known authorities including FCA, ASIC, and CySEC, offering a safe trading environment for all.
    Demo Account
    Yes
    Minimum Deposit
    $0
    Minimum Trade
    0.01 Lots
    Leverage
    1:30 (Retail), 1:500 (Pro)
    Copy Trading
    Yes
    Regulator
    FCA, ASIC, CySEC, DFSA, CMA, BaFin, SCB
    Instruments
    CFDs, Forex, Currency Indices, Stocks, Indices, Commodities, ETFs, Crypto (only Pro clients), Spread Betting
    Platforms
    MT4, MT5, cTrader, TradingView, AutoChartist, DupliTrade, Quantower
    Account Currencies
    USD, EUR, GBP, CAD, AUD, NZD, JPY, CHF, HKD, SGD
    Automated Trading
    Expert Advisors (EAs) on MetaTrader
    AI
    Yes
    Guaranteed Stop Loss
    No
  4. 4
    Trust Platform Assets Fees Accounts Research Education Mobile Support 4.4
    Trade Nation is a leading foreign exchange and contract for difference broker regulated in various areas including the UK and Australia. This company provides affordable fixed and variable spreads on over 1000 assets and strong trading platforms and educational resources. Traders could use the Signal Centre for trading ideas.
    Demo Account
    Yes
    Minimum Deposit
    $0
    Minimum Trade
    0.1 Lots
    Leverage
    1:500 (entity dependent)
    Copy Trading
    Yes
    Regulator
    FCA, ASIC, FSCA, SCB, FSA
    Instruments
    Forex, CFDs, Indices, Shares, Commodities, Futures, Bonds, Spread Betting, Cryptos (Bahamas Entity Only)
    Platforms
    MT4
    Account Currencies
    USD, EUR, GBP, AUD, ZAR, SEK, NOK, DKK
    Automated Trading
    Expert Advisors (EAs) on MetaTrader
    AI
    No
    Guaranteed Stop Loss
    No
  5. 5
    Trust Platform Assets Fees Accounts Research Education Mobile Support 3.5
    Founded in 2001, easyMarkets is known as a reliable fixed spread broker. Over the years, it has improved its tools, such as adding the MetaTrader suite and TradingView, and enhanced its unique risk management tools like dealCancellation, distinguishing it from competitors.
    Demo Account
    Yes
    Minimum Deposit
    $25
    Minimum Trade
    0.01 lots
    Leverage
    1:2000 1:30
    Copy Trading
    No
    Regulator
    CySEC, ASIC, FSCA, FSC, FSA
    Instruments
    CFDs, Forex, Stocks, Indices, Commodities, Crypto
    Platforms
    easyMarkets App, Web Platform, MT4, MT5, TradingView, TradingCentral
    Account Currencies
    USD, EUR, GBP, CAD, AUD, JPY, ZAR, TRY, SEK, NOK, CHF, HKD, SGD, PLN, CZK, MXN, CNY
    Automated Trading
    Expert Advisors (EAs) on MetaTrader
    AI
    No
    Guaranteed Stop Loss
    Yes

Compare Fixed Spread Brokers

Broker
US Flag
USD Account
Demo Account
Minimum Deposit
Minimum Trade
Leverage
Copy Trading
Regulator
Instruments
Platforms
Account Currencies
Automated Trading
AI
Guaranteed Stop Loss
eToro USA
$100 $10 SEC, FINRA Stocks, Options, ETFs, Crypto eToro Trading Platform & CopyTrader USD
AvaTrade
$300$100 0.01 Lots 1:30 (Retail) 1:400 (Pro) ASIC, CySEC, FSCA, ISA, CBI, FSA, FSRA, BVI, ADGM, CIRO, AFM CFDs, Forex, Stocks, Indices, Commodities, ETFs, Bonds, Crypto, Spread Betting, Futures WebTrader, AvaTradeGO, AvaOptions, AvaFutures, MT4, MT5, AlgoTrader, TradingCentral, DupliTrade USD, EUR, GBP, CAD, AUD Expert Advisors (EAs) on MetaTrader
Pepperstone
$0 0.01 Lots 1:30 (Retail), 1:500 (Pro) FCA, ASIC, CySEC, DFSA, CMA, BaFin, SCB CFDs, Forex, Currency Indices, Stocks, Indices, Commodities, ETFs, Crypto (only Pro clients), Spread Betting MT4, MT5, cTrader, TradingView, AutoChartist, DupliTrade, Quantower USD, EUR, GBP, CAD, AUD, NZD, JPY, CHF, HKD, SGD Expert Advisors (EAs) on MetaTrader
Trade Nation
$0 0.1 Lots 1:500 (entity dependent) FCA, ASIC, FSCA, SCB, FSA Forex, CFDs, Indices, Shares, Commodities, Futures, Bonds, Spread Betting, Cryptos (Bahamas Entity Only) MT4 USD, EUR, GBP, AUD, ZAR, SEK, NOK, DKK Expert Advisors (EAs) on MetaTrader
easyMarkets
$25 0.01 lots 1:2000 1:30 CySEC, ASIC, FSCA, FSC, FSA CFDs, Forex, Stocks, Indices, Commodities, Crypto easyMarkets App, Web Platform, MT4, MT5, TradingView, TradingCentral USD, EUR, GBP, CAD, AUD, JPY, ZAR, TRY, SEK, NOK, CHF, HKD, SGD, PLN, CZK, MXN, CNY Expert Advisors (EAs) on MetaTrader
Broker
US Flag
USD Account
Demo Account
Minimum Deposit
Minimum Trade
Leverage
Copy Trading
Regulator
Instruments
Platforms
Account Currencies
Automated Trading
AI
Guaranteed Stop Loss

Safety Comparison

Compare how safe the Best Brokers With Fixed Spreads 2025 are.

Broker
Trust Rating
Guaranteed Stop Loss
Negative Balance Protection
Segregated Accounts
eToro USA
3.3
AvaTrade
4.8
Pepperstone
4.6
Trade Nation
4.3
easyMarkets
4.1
Broker
Trust Rating
Guaranteed Stop Loss
Negative Balance Protection
Segregated Accounts

Mobile Trading Comparison

Compare the mobile trading features of the Best Brokers With Fixed Spreads 2025.

Broker
Mobile Apps
iOS Rating
Android Rating
Smart Watch App
eToro USA iOS & Android
4.3
4.0
AvaTrade iOS & Android
4.3
4.0
Pepperstone iOS & Android
4.4
4.1
Trade Nation iOS & Android
4.1
3.5
easyMarkets iOS & Android
4.6
3.6
Broker
Mobile Apps
iOS Rating
Android Rating
Smart Watch App

Comparison for Beginners

Compare how suitable the Best Brokers With Fixed Spreads 2025 are for beginners.

Broker
Demo Account
Minimum Deposit
Minimum Trade
Education Rating
Support Rating
Fractional Shares
Demo Competitions
eToro USA $100 $10
3.0
3.0
AvaTrade $300$100 0.01 Lots
4.5
4.3
Pepperstone $0 0.01 Lots
4.0
4.6
Trade Nation $0 0.1 Lots
3.8
4.5
easyMarkets $25 0.01 lots
4.0
3.8
Broker
Demo Account
Minimum Deposit
Minimum Trade
Education Rating
Support Rating
Fractional Shares
Demo Competitions

Comparison for Advanced Traders

Compare how suitable the Best Brokers With Fixed Spreads 2025 are for advanced or professional traders.

Broker
Automated Trading
VPS
API
AI
Pro Account
Leverage
Low Latency
Extended Hours
eToro USA
AvaTrade Expert Advisors (EAs) on MetaTrader 1:30 (Retail) 1:400 (Pro)
Pepperstone Expert Advisors (EAs) on MetaTrader 1:30 (Retail), 1:500 (Pro)
Trade Nation Expert Advisors (EAs) on MetaTrader 1:500 (entity dependent)
easyMarkets Expert Advisors (EAs) on MetaTrader 1:2000 1:30
Broker
Automated Trading
VPS
API
AI
Pro Account
Leverage
Low Latency
Extended Hours

Accounts Comparison

Compare the trading accounts offered by Best Brokers With Fixed Spreads 2025.

Broker
Demo Account
Interest on Cash
Islamic Account
Joint Account
Managed Account
PAMM
MAM
LAMM
Pro Account
eToro USA USD: 4.9%
AvaTrade USD: 2.7%
Pepperstone
Trade Nation
easyMarkets
Broker
Demo Account
Interest on Cash
Islamic Account
Joint Account
Managed Account
PAMM
MAM
LAMM
Pro Account

Detailed Rating Comparison

Compare how we rated the Best Brokers With Fixed Spreads 2025 in key areas.

Broker
Trust
Platforms
Assets
Mobile
Fees
Accounts
Research
Education
Support
eToro USA
3.3
3.5
2.9
4.2
3.4
3.0
3.5
3.0
3.0
AvaTrade
4.8
4.3
4.5
4.2
3.8
4.3
4.3
4.5
4.3
Pepperstone
4.6
4.4
3.8
4.3
4.4
4.0
4.3
4.0
4.6
Trade Nation
4.3
4.3
3.5
3.8
4.5
4.5
3.8
3.8
4.5
easyMarkets
4.1
4.0
3.5
4.1
3.3
3.8
4.0
4.0
3.8
Broker
Trust
Platforms
Assets
Mobile
Fees
Accounts
Research
Education
Support

Fee and Cost Comparison

Compare the cost of trading with the Best Brokers With Fixed Spreads 2025.

Broker
Cost Rating
Fixed Spreads
Inactivity Fee
CFD Stocks Spread
EUR/USD Spread
Crypto Spread
eToro USA
3.4
$10 $0 BTC 0.75%
AvaTrade
3.8
$50 0.13 0.9 BTC <1%, ETH 2%
Pepperstone
4.4
$0 0.02 0.1 BTC 30, ETH 0
Trade Nation
4.5
$0 Variable Variable Fixed
easyMarkets
3.3
$25 0.25 (Apple) 0.7 62 (BTC)
Broker
Cost Rating
Fixed Spreads
Inactivity Fee
CFD Stocks Spread
EUR/USD Spread
Crypto Spread

Broker Popularity

See how popular the Best Brokers With Fixed Spreads 2025 are in terms of number of clients.

Broker Popularity
eToro USA
3,200,000
Pepperstone
620,000
AvaTrade
400,000
easyMarkets
200,000

Why Trade With eToro USA?

eToro is a top choice for traders due to its top-notch social investing and copy trading services. The broker caters well to new traders with its low deposit requirement, commission-free trading, and user-friendly platform.

Pros

  • The low minimum deposit and simple account setup allow beginners to start trading quickly.
  • Traders can use Smart Portfolios for a simpler approach, covering multiple sectors and markets like renewable energy and artificial intelligence.
  • A free demo account enables new users and potential traders to test the broker without risk.

Cons

  • Traders used to third-party charting tools won't find MetaTrader 4 platform integration.
  • The exclusive terminal does not accommodate trading bots and lacks extra equity market analysis tools.
  • Average fees can reduce the profits of traders.
Go to eToro USA
Securities trading offered by eToro USA Securities, Inc. (“the BD”), member of FINRA and SIPC. Cryptocurrency offered by eToro USA LLC (“the MSB”) (NMLS: 1769299) and is not FDIC or SIPC insured. Investing involves risk. https://www.daytrading.com/ is not an affiliate and may be compensated if you access certain products or services offered by the MSB and/or the BD.

Why Trade With AvaTrade?

AvaTrade provides traders with essential tools: an intuitive WebTrader, strong AvaProtect risk management, a quick 5-minute sign-up, and reliable support for fast-paced markets.

Pros

  • Years later, AvaTrade is still among the few brokers with a custom risk management tool, AvaProtect, which insures losses up to $1M for a fee and is simple to use on the platform.
  • The WebTrader performed well in our tests, featuring an easy-to-use interface for beginners and strong charting tools, including 6 chart layouts and over 60 technical indicators.
  • AvaTrade's support team did well in tests, responding within 3 minutes and providing local support in major regions like the UK, Europe, and the Middle East.

Cons

  • While the deposit process is smooth, AvaTrade doesn't support crypto payments, unlike TopFX, which caters to crypto-focused traders.
  • The AvaSocial app is satisfactory but could be better. Its design, usability, and navigation between strategy providers and account management need improvement to compete with top platforms like eToro.
  • AvaTrade’s WebTrader has improved, but it needs more customization as widgets like market watch and watchlists can't be hidden, moved, or resized.
Go to AvaTrade
79% of retail accounts lose money with this provider.

Why Trade With Pepperstone?

Pepperstone is a leading choice for trading with low spreads, quick execution, and advanced charting for experienced traders. New traders benefit from no minimum deposit, a wealth of educational resources, and 24/7 support. Operating under ASIC regulation, Pepperstone is a top option for Australian traders and won DayTrading.com's 'Best Aus Broker' award for 2025.
Christian Harris
Review Author

Pros

  • Get top-notch customer support through phone, email, or live chat. Expect responses within <5 minutes based on our trials.
  • Pepperstone is a low-cost broker, ideal for serious traders. The Razor account offers spreads from 0.0, with rebates up to 30% for indices and commodities, and $3 per lot for forex through the Active Trader program.
  • Pepperstone has won several annual DayTrading.com awards, including 'Best Overall Broker' in 2025 and 'Best Forex Broker' runner-up in 2025.

Cons

  • Despite market improvements, the crypto options provided are fewer compared to other brokers like eToro, with no chance to buy actual coins.
  • Pepperstone does not support cTrader Copy, a popular feature in the cTrader platform available at alternatives like IC Markets, though it has launched an intuitive copy trading app.
  • Pepperstone's demo accounts last for 30 days. This might be insufficient for learning the various platforms and testing trading strategies.
Go to Pepperstone
CFDs and FX are complex instruments and come with a high risk of losing money rapidly due to leverage. 75.1%76.3%74.6%81.8% of retail investor accounts lose money when trading CFDs.

Why Trade With Trade Nation?

Trade Nation is a suitable platform for new traders, offering diverse financial markets in a user-friendly environment. It has no minimum deposit requirement, provides free funding options, and robust educational resources.

Pros

  • The brand offers a variety of trading platforms and apps, like MT4, suitable for skilled traders.
  • Trade a variety of investments using leveraged CFDs for buying and selling opportunities.
  • Global traders can trade using various account currencies.

Cons

  • Lower legal safeguards with overseas businesses.
Go to Trade Nation
67.3% of retail investor accounts lose money when trading CFDs with this provider. 84% of retail investor accounts lose money when trading CFDs with this provider.

Why Trade With easyMarkets?

easyMarkets offers fixed spreads starting at 0.7 pips, making it ideal for beginners needing predictable costs. With a Bitcoin-based account, it's also a great choice for crypto traders wanting to deposit, trade, and withdraw in digital currencies.
Christian Harris
Review Author

Pros

  • With over 20 years in the industry, multiple awards, and approval from two top regulators, easyMarkets maintains its reputation as a secure broker for active traders.
  • easyMarkets prioritizes risk management with negative balance protection, guaranteed stop losses, and dealCancellation (updated in 2024 to cover 1, 3, or 6-hour periods) in the Web Trader.
  • Unlike variable spreads offered by most brokers we've tested, easyMarkets offers fixed spreads from 0.7 pips. This makes trading costs predictable, benefiting beginners and those trading in volatile markets.

Cons

  • easyMarkets offers comprehensive educational resources for beginners but does not meet advanced traders' needs. The Academy includes well-organized courses and engaging gamification, but the content is not detailed enough.
  • easyMarkets does not provide a zero-spread account like Pepperstone. This can be a disadvantage for traders and high-frequency traders who need low transaction costs.
  • easyMarkets lags as it lacks the copy trading features offered by category leader eToro. These features are popular among newcomers wanting to follow the strategies of experienced traders.
Go to easyMarkets
67% of retail accounts lose money with this provider.
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Methodology

We identified all brokers offering fixed spreads in our evolving database, then recorded and analyzed their spreads across:

  • Forex: e.g. EUR/USD, GBP/USD, EUR/GBP
  • Stocks: e.g. Apple
  • Indices: e.g. FTSE
  • Commodities: e.g. oil
  • Crypto: e.g. Bitcoin

Each broker was then ranked based on our overall rating, which combines 200+ data points with insights from our expert testing panel – comprised of industry professionals and advanced traders – who rigorously assess platform performance, pricing consistency, and trading conditions.

What to Look for in a Fixed Spread Broker

Fixed spread brokers can be a great choice if you want stable trading costs and no surprises.

While they may have slightly higher spreads in our experience, they protect traders from sudden spread spikes during volatile periods, making them attractive to beginners and news traders.

Still, from our years of testing various fixed spread brokers, we know they aren’t all created equal. Here’s what you should consider:

Regulation and Security

Always trade with a regulated broker to ensure your funds are safe. Look for brokers licensed by:

  • FCA (UK): Top-tier regulation with strong client protection
  • ASIC (Australia): Strict rules to protect traders
  • CySEC (Cyprus): Well-regulated, offering client fund segregation
  • FSCA (South Africa): Growing regulation with solid oversight

City Index stood out during our testing for its excellent regulatory oversight and standing in the industry, with licenses from the FCA, ASIC, CySEC, and MAS.

Spread Size and Trading Costs

Not all fixed spreads are the same. Look for brokers offering:

  • Tight spreads on major forex pairs (e.g., EUR/USD fixed at 1.5 pips or lower)
  • No hidden fees or commissions (some brokerages charge extra fees)

Years on, and Pepperstone is still among the cheapest fixed spread brokers we’ve seen, featuring fixed spreads on the EUR/USD of 1.0 pip.

Pro tip: Check whether spreads differ depending on the platform you can use. As you can see in the example below, easyMarkets offers fixed spreads from 4 on OIL/USD on its own web platform and app, plus TradingView, but they start from 3 on MT4.

Table comparing fixed and variable spreads at easyMarkets

Available Markets and Instruments

Does the broker offer only forex trading, or can you trade commodities, stocks, and crypto? A wider range of markets means more trading opportunities.

Fixed spread broker, FxPro, really impressed during our tests in this department, letting you trade across 70+ forex pairs, 2,000+ stocks, 28+ crypto pairs, 12+ metals, 18+ indices, 3+ energy commodities, and 38+ futures contracts on major global markets.

Trading Platforms and Tools

The best brokers offer platforms like:

  • MetaTrader 4 (MT4): Perfect for forex traders
  • MetaTrader 5 (MT5): More advanced tools and additional assets
  • TradingView: An increasingly popular alternative to MetaTrader with an interface that’s leaps ahead
  • Proprietary platforms: Some fixed spread brokers, notably Trade Nation, have their own powerful and intuitive platforms

Expert take: In the hunt for competitive spreads, make sure you don’t overlook some of the other essential qualities your broker must provide. Look for fast execution, mobile compatibility, and advanced charting tools.

Trading FX with fixed spreads on Trade Nation's platform

Order Execution Speed

Since fixed spread brokers often use the market maker model in our investigations, choosing a broker with fast execution speed is crucial. Avoid brokers with frequent requotes or slow trade execution.

Although market makers provide spread stability, they may delay execution or requote prices in volatile conditions. So, if I choose a fixed spreads broker, I still always check if I’m getting my orders filled quickly and close to the prices I’ve seen quoted.

Pepperstone is another terrific pick here with execution speeds averaging just 30ms – significantly faster than our 100ms benchmark for a ‘fast broker’.

Account Types and Minimum Deposits

Some brokers offer low-deposit fixed-spread accounts, while others require higher deposits for tighter spreads. Pick an account that fits your trading budget.

Interestingly, we’re seeing a growing trend of brokers with low minimum deposits, sometimes even $0 at providers like City Index, catering to absolute beginners.

FAQ

What Is a Fixed Spread Account?

Fixed spread accounts provide a consistent difference between the buying and selling price of assets, regardless of market fluctuations.

How Do Fixed Spread Brokers Work?

Most fixed spread brokers operate as market makers, meaning they set their own spreads instead of passing trades directly to liquidity providers.

This model allows them to control trading costs for their clients while making money from the spread difference.

What Is the Difference Between a Fixed and Variable Spread?

A fixed spread remains constant, while a variable spread can change with market conditions.

  • Fixed spreads remain constant regardless of market conditions. Your spread stays the same whether it’s a calm trading day or a volatile news event.
  • Variable spreads, on the other hand, fluctuate based on market liquidity and volatility. They may be tight when the market is stable but widen significantly during significant events like NFP (Non-Farm Payroll) releases or interest rate decisions.

There are benefits to both:

  • Fixed spreads offer reliability and predictability.
  • Variable spreads might be cheaper in calm market times but can widen significantly during volatility.

How Will a Fixed Spread Account Impact My Trading Costs?

With fixed spreads, you always know how much you’ll pay per trade. This makes them ideal for beginners who want to avoid unexpected costs and news traders who don’t want spreads widening before entering a position.

For example, if your broker offers a fixed spread of 1.5 pips on EUR/USD, that’s what you’ll pay, whether the market is calm or volatile. In contrast, a variable spread might start at 0.6 pips but shoot up to 5 pips or more during news events.

What Are the Pros and Cons of Fixed Spread Accounts?

Pros:

  • Predictable Costs: No surprises when spreads widen suddenly
  • Better for News Trading: Avoid massive spread spikes during news releases
  • Ideal for Small Accounts: No need for a large balance to manage fluctuating costs
  • Smoother Trading Experience: Stable spreads create a stress-free trading environment

Cons:

  • Generally Higher Spreads: Fixed spreads are often wider than the lowest variable spreads
  • Potential for Requotes: Some brokers may delay execution or requote prices
  • Not Ideal for Scalping: Scalpers prefer tight variable spreads during low-volatility periods

Should I Use a Broker With Fixed Spreads?

Fixed spread brokers are perfect for:

  • Beginners: No sudden cost increases, making trading easier to understand
  • Small Account Traders: Avoid big spread spikes eating into profits
  • News Traders: No crazy spread widening during major news events
  • Casual Traders: If you trade occasionally, fixed spreads keep costs predictable

However, an ECN broker with tight variable spreads might be better if you’re a high-frequency trader.