How do I enter income in excess of $10,000,000

TurboTax limits the number of digits in data entry fields to nine, including the cents figures to the right of the decimal point. 

To work around this issue, break that amount into smaller pieces "as if" you had received multiple Forms.

Additional information: https://ttlc.intuit.com/replies/3300076 

Might depend on the form type....You can do that for stock sales, but not sure it can be done for (say) a W-2 form.

Can you give more details on how to go about it? The link no longer works. Do you just make a second W2 with part of the income, the same addresses and ID numbers but no taxes?

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@mory wrote:

Can you give more details on how to go about it? The link no longer works. Do you just make a second W2 with part of the income, the same addresses and ID numbers but no taxes?

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Your income in box 1 of the W-2 is more than $9,999,999.00?  If so, you should be using a tax professional to prepare your tax return.