File extension t22 contains saved tax returns for 2022 from H&R Block tax software. H&R Block is a family of tax preparation programs for Windows and Mac. The default file name is MyTaxes.t22. You can open t22 files in H&R Block software for 2022 or later. Select “Import” to bring tax return data into the current year’s software. The file extension indicates the tax year – t21 for 2021 returns, t22 for 2022, etc. t22 files store tax return data as binary information, typically 32 to 300 KB in size. They cannot be opened by other programs. Contact H&R Block support for more questions on t22 files.