Whether your company is a sole proprietorship, partnership or corporation, one of the most important things to do as a small-business owner is to meet all your tax deadlines.

Once that universal personal tax deadline of April 15 passes, many small businesses let themselves get caught up in running their business and forget that there are business tax deadlines all year long.

Here are some of the business tax deadlines for the remainder of 2015 that can help you get a better handle on tax-related expenses and keep your cash flow more even throughout the year for a Sole Proprietorship, Single-Member LLCs, and Partnership LLCs – the most common types of business entities used by small businesses, even in the cleaning industry:

  • June 15: Second-quarter estimated tax payment due
  • July 31: Quarterly payroll tax return due (Form 941)
  • September 15: Third-quarter estimated tax payment due
  • October 15: Individual tax return due if an extension was granted earlier in the year (on or before April 15)
  • October 31: Quarterly payroll tax return due (Form 941)

To review the standard annual tax calendar for a small business, visit NerdWallet.