Can I file online if I have to include form 5329?

[jabberjo]

I would also like to request a waiver for the additional tax,can this be included?

[macuser_22]

It depends on what the waiver  is for.    If a missed 2019 RMD and you do not have a 2019 1099-R to file then the 5329 can only be attached to a mailed tax return.

[KathrynG3]

No, as Champ @macuser_22 explained regarding a waiver of a penalty in the scenario described.

It depends assuming you are referring to filing for an exception to the 10% penalty for a 2019 early withdrawal from an IRA, not a RMD, for which you received a 2019 Form 1099-R. According to the availability links below, you could e-file while including Form 5329. 
Click 2019 Instructions for Form 5329 for more details on page 4.

For example, if the distribution was made for qualified education expenses, select code 08 and keep the documentation for your records verifying the exception.

TurboTax IRS forms availability table

State forms availability table

[Edited 4/3/2020 | 12:15 PM PST]

@jabberjo

[macuser_22]

@KathrynG3 - The poster asked about a waiver of the penalty.

About the only reason for a waiver is because of a 2019 RMD that was missed and taken in 2020.    TurboTax does have that as part of the 1099-R interview, however, if no IRA distribution was taken in 2019 and there is no 2019 1099-R to enter, then it is not possible to get to the 1099-R interview for the 5329 form.   The only way to submit such a 5329 without a 1099-R it to manually prepare it and attach to to a mailed tax return if using TurboTax online.

It is possible to e-file such a 5329 but only by using the forms mode using the desktop version of TurboTax.  This has been that way for years.