The most practical thing is to separate your bank accounts by country, or at least have one account dedicated solely to what you send there, so you can see at a glance how much goes out each month without it getting mixed in with your local expenses. Use a budgeting app (there are plenty of free ones) and create clear categories: rent here, support there, food, etc., so you can track exactly where every dollar goes and don't get blindsided at the end of the month. If you're dealing with two currencies, lock in an exchange rate you use consistently in your calculations so you don't drive yourself crazy with daily fluctuations, and review your numbers every week even if it's just for 5 minutes - it's way less stressful than letting them pile up!