1. Trained professionals can help determine the exemptions you are eligible for. This can reduce or eliminate the amount you owe in US taxes.

2. It can help determine if the foreign tax credit applies to your situation. The Overseas Tax Credit is designed to help people working abroad and abroad avoid double taxation. One in the United States and one in the country where current employment is available.

3. When you undertake an overseas job, companies may offer equal tax adjustments. This means they make sure employees don't pay more or fewer taxes than they would if they were in the United States. The CPA can detail what expenses are covered.

4. A good accountant will make sure you submit your documents on or before the deadline. Fast delivery always saves money.

5. It will help you know where your tax residency is. And does that residence qualify for your foreign income exemption?