# Investment migration guides

GoldenVisas.fyi has 8 guides on investment migration: authorised and licensed agents and advisory firms for residence-by-investment (golden visa) and citizenship-by-investment programmes, plus the official programme pages they apply to, grouped by country.

## General

- [Due Diligence and Source-of-Funds Checks](https://goldenvisas.fyi/guides/due-diligence-and-source-of-funds.md): What enhanced due diligence covers, what documents you need for source-of-funds verification, and how the process differs across residence and citizenship by investment programmes.
- [Family Members and Dependants in Investment Migration](https://goldenvisas.fyi/guides/family-members-and-dependants.md): Who qualifies as a dependant, age limits, marriage and civil partnership rules, newborn children, and programme-specific differences for residence and citizenship by investment.
- [How to Vet an Investment Migration Agent](https://goldenvisas.fyi/guides/how-to-vet-an-agent.md): Check the official authorised-agent list, verify the licence number, confirm the programmes the agent is authorised for, and spot red flags before you engage.
- [Programme Cost Comparison 2026](https://goldenvisas.fyi/guides/programme-cost-comparison-2026.md): Official minimum investments and government fees for residence and citizenship by investment programmes. Each figure cites its government source and date.
- [Recent EU Changes to Investment Migration Programmes](https://goldenvisas.fyi/guides/recent-eu-changes.md): Verified updates to Portugal (2023), Spain (2025), Ireland (2023), Malta (2025), Greece (2024), Cyprus, Hungary and Bulgaria investment migration programmes, each with its official source.
- [Residence vs Citizenship by Investment Explained](https://goldenvisas.fyi/guides/residence-vs-citizenship-by-investment.md): Residence by investment (golden visa) and citizenship by investment (CBI) are distinct pathways. This guide explains the differences in rights, obligations, timelines and typical investment thresholds.
- [Tax Residency Basics for Investment Migration](https://goldenvisas.fyi/guides/tax-residency-basics.md): How residence and citizenship by investment affect tax residence, the 183-day rule, double tax treaties, and common misconceptions. Each point cites official tax authority sources.
- [Investment Migration Timelines](https://goldenvisas.fyi/guides/timelines.md): Typical processing times from engagement to approval for residence and citizenship by investment programmes. Each timeline cites the official government source.