Originally Posted by Want2retire
When you contribute to a Vanguard IRA online, you must designate to which year your contributions are to be applied.
I haven't contributed to my Vanguard IRA by automatic investment, but I am sure you will be required to designate the year.
That's how T. Rowe-Price is. I have a Roth IRA there, and had it set up for the automatic investing. There was a place on my TRP account web-page to designate which year (current/prior) you wanted the contribution to apply to. In '07 I had it setup for Jan-Mar to be prior year....to max-out for '06, and then April to be current year.
As for doing random ACH transfers into my IRA, there was a box to check for either current or prior year on my TRP account web-page.