First, there is denial. Then relief, and then possibly a nice refund after it’s all said and done.

We’re talking about tax season, and it has arrived. It’s also a good time to take care of other financial business, like maxing out an IRA or rolling over an old 401(k).

Whether you are collecting receipts in a shoebox—or have everything neatly organized so that you can file the minute your tax forms are ready—here’s a calendar to keep you on track this tax season.

Your 2015 Tax Season Calendar

Key dates to remember

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Determination of largest automated investment service reflects Betterment LLC’s distinction of having the most accounts, based on Betterment’s review of account numbers self-reported in the SEC’s Form ADV, across Betterment’s survey of RIA automated investment services. Determination of fastest-growing automated investment service reflects Betterment LLC’s distinction of obtaining the largest number of new accounts since January 1, 2014, based on Betterment’s review of account numbers self-reported in the SEC’s Form ADV, across Betterment’s survey of automated investing services.