You must choose an accounting partner for your business that works with you year round. Your business cannot be prepared to file a tax return at the end of the year if you never had an accountant working with you. All the documentation that comes up during the year is best handled by a professional who knows how it fits into your year end return.
Your accounting partner can do a lot more for you than just preparing your taxes. A strong accounting firm can help you manage payroll, handle tax payments during the year, and avoid trouble with government regulators. Accountants know how to manage your money in a way that simplifies your life, and they keep your finances in order when it comes time to file your return.
Ask your accountant about financial decisions you plan to make that could inclue investing. The investments that you make have tax implications, and you must speak to the accountant about what they would do in your situation. They can help you save money on your tax return, or they can advice you to do something that is much safer.
The accounting partner you have chosen will be there for you all year as you plan your finances. You are making financial decisions every day that change the nature of your business, and you must have someone you can turn to to help you. The partner you selected gives you advice when it is most needed, and they assure that your taxes are prepared when the time comes. You are leading up to that tax return every year, and your accountant is constantly preparing on your behalf.