Only the IRS would know why it is taking so long.
You can checked the IRS website Where's My Refund for your Federal information?
https://www.irs.gov/refunds
If it has been over 21 days since being accepted by the IRS and the tax refund is still Processing you can call the IRS and speak with an IRS agent concerning your tax refund. Don't call before 21 days as the IRS will tell you to wait until the prescribed period.
The IRS telephone number is 1-800-829-1040, and they are available from 7 a.m. – 7 p.m. Monday thru Friday. The best time to call is early in the morning.
- The first question the automated system will ask you is to choose your language.
- Once you’ve set your language, do NOT choose Option 1 (regarding refund info). Choose option 2 for “Personal Income Tax” instead.
- Next, press 1 for “form, tax history, or payment”.
- Next, press 3 “for all other questions.”
-Next, press 2 “for all other questions.”
- When the system asks you to enter your SSN or EIN to access your account information, do NOT enter anything.
-After it asks twice, you will be prompted with another menu.
-Finally, press 2 for personal or individual tax questions. The system should then transfer you to an agent.
