Yes, you should file an extension if you won't receive your K-3 tax form until June. This will give you until October 15 to file your tax return without penalties, ensuring you have enough time to accurately report all necessary information. Schedule K-3 includes details on foreign income, deductions, credits, and foreign tax credit limitations.
To file a personal extension - click here.
To file Business extension for federal and state - if applicable, click here for steps.