1. Valid Passport: Your passport should be valid for at least six months beyond your intended stay in Ukraine. It should also have at least two blank visa pages.
2. Completed Visa Application Form: Fill out the visa application form accurately and completely.
3. Passport-sized Photos: Provide recent passport-sized photographs that meet the specific requirements set by the Ukrainian embassy or consulate. Typically, two passport-sized photos are required.
4. Proof of Travel Insurance: Obtain travel insurance that covers your entire stay in Ukraine. The insurance should provide coverage for medical expenses, emergency medical evacuation, and repatriation of remains.
5. Proof of Financial Means: Show proof of sufficient funds to cover your expenses during your stay in Ukraine. This can include bank statements, credit card statements, or other financial documents.
6. Travel Itinerary: Provide a detailed travel itinerary that includes your planned accommodation, transportation, and activities in Ukraine.
7. Round-trip Flight Reservation: Provide a copy of your round-trip flight itinerary or confirmed flight tickets.
8. Additional Documents: Depending on your specific circumstances and the requirements of the Ukrainian embassy or consulate, you may need to provide additional documents. These could include a letter of invitation, a no-objection letter from your employer, or proof of purpose of travel.

Tourist visas for Ukraine typically allow for a stay of up to 90 days within a 180-day period. This means that you can stay in Ukraine for up to 90 days within a period of 180 days from your initial entry date.

The processing time for a Ukrainian tourist visa can vary depending on various factors, including the embassy or consulate where you apply and the volume of applications being processed. Typically, it takes around 5 to 15 working days for the visa to be processed.