Intuit’s offering for Windows 7 phones, TaxCaster, will give you a ballpark estimate of where you stand with your taxes this year. You can enter basic tax information like income and deduction totals, and play around with sliders pertaining to life events to get a reasonable idea of how much you’re owed or how much you owe. Ultimately, you’re only going to get a rough figure, but it should be a pretty accurate forecast of what you’ll be facing on the 15th (or is it the 18th now?), for better or worse. It’s pretty basic and easy to use, and available now for free for all Windows 7 phones.