History. 1  Map of Canary Wharf area in 1899 showing West India Docks and the Isle of Dogs. 2  Canary Wharf aerial view (2009), from the southeast end of the Isle of Dogs, showing the Millwall Dock. 3  Canary Wharf, view east from Cabot Square. 4  London City Airport runway with Canary Wharf and the O2 Arena in the background.
By Investopedia AAA |. A: The main difference between a Roth 401(k) plan and Roth individual retirement account (IRA) is that the 401(k) is offered by an employer as a defined contribution pension, while the IRA is sought out by the individual.y Investopedia AAA |. A: The main difference between a Roth 401(k) plan and Roth individual retirement account (IRA) is that the 401(k) is offered by an employer as a defined contribution pension, while the IRA is sought out by the individual.
Both a 401k and a Roth IRA have annual contribution limits. The contribution limit varies from year to year and is adjusted based on inflation. You can make the maximum contribution to both a 401k and a Roth IRA in the same year.ou contribute to a Roth IRA after taxes. That way you won't have to pay taxes on that money when you withdraw it after you retire. If you invest wisely and your Roth IRA increases in value, you will not have to pay taxes on the gains from your investment. Your 401k will be taxed after you retire.