Blog
Guides, comparisons, and resources for European investors
Modelo 720: A Practical Guide for Investors with Foreign Brokers
Everything you need to know about Spain's Modelo 720 if you invest through DEGIRO, Interactive Brokers, or another foreign broker.
Scalable Capital Review 2026: The European Broker You Might Be Missing
A complete analysis of Scalable Capital: pricing tiers, products, platform, and how it compares to Trade Republic and DEGIRO.
How Much Money Do You Need to Live Off Dividends in Spain?
Calculate how much capital you need to live off dividends in Spain, accounting for taxes, dividend yields, and investment strategies.
Accumulating vs Distributing ETFs: Which Is Better for European Investors?
The differences between accumulating and distributing ETFs, tax implications in Europe, and which one suits your situation.
Complete Beginner's Guide to Investing in Spain (2026)
Everything you need to know to start investing in Spain: basics, brokers, ETFs, taxes, and how to build your first portfolio.
FIRE Calculator for Spain: Calculate When You Can Retire Early
A complete guide to financial independence in Spain: how Arfin's FIRE calculator works, key variables, example scenarios, and common mistakes.
Best Portfolio Tracker Tools in 2026: A Complete Comparison
A comparison of the best tools for tracking your investment portfolio: Portfolio Performance, Investing.com, Morningstar, Yahoo Finance, and Arfin.
How to Declare Your Broker Investments on Spanish Taxes (Step-by-Step Guide)
A practical guide to declaring capital gains, dividends, and trades from DEGIRO, Trade Republic, and Interactive Brokers on your Spanish tax return.
DEGIRO vs Trade Republic vs Interactive Brokers: Which One to Choose in 2026
A detailed comparison of Europe's three most popular brokers: fees, products, platform, and who each one is best for.
Trade Republic Review 2026: A Complete Analysis for European Investors
A detailed review of Trade Republic: fees, products, savings account, pros and cons, and who this broker is (and isn't) for.
How to Track All Your Banks and Brokers in One Place (Without Spreadsheets)
Why spreadsheets are a good start but a bad long-term solution, and how to centralise your banks and brokers into one live dashboard.
Time-Weighted Return vs IRR: The Right Way to Measure Your Portfolio Performance
What TWR and IRR are, when to use each, and why broker apps often confuse the picture when it comes to your real portfolio performance.
How to Track Your DEGIRO and Trade Republic Portfolios in One Dashboard
Why investors use both DEGIRO and Trade Republic, the problems with tracking each in isolation, and how to consolidate them into a single portfolio view.
FIRE for European Investors: How to Track Your Progress With Real Data
FIRE basics adapted to Europe, the key metrics to track, and how to connect your real accounts to your financial independence plan.
Net Worth Tracker for European Investors: See All Your Wealth in One Dashboard
What net worth really means for investors, why Europeans have it harder, and how a modern tracker can help you see everything clearly.