After you file

@mrduggan05

I agree, this probably is not a satisfying response from Get My Payment.  But it is better than you're not eligible for a payment.

IRS FAQ states:

Status Messages

You'll see one of these messages when you use Get My Payment:

Payment Status: 

• A payment has been processed, a payment date is available and payment is to be sent either by direct deposit or mail. Note: mail means you may be issued an EIP Card or a check.

or

• You’re eligible, but a payment has not been processed and a payment date is not yet available.

It will not show the amount of your 2021 Economic Impact Payment.

In the computation, $77,500 is half-way between $75,000 and $80,000, and the payment is cut in half.  Note that the total payment is cut in half, even if one or more dependents are reported.

IRS FAQ Who is eligible for the third Economic Impact Payment and what incomes qualify? states:

Generally, if you are a U.S. citizen or U.S. resident alien, you are eligible for the full amount of the third Economic Impact Payment if you (and your spouse if filing a joint return) are not a dependent of another taxpayer and have a valid Social Security number (see exception when married filing jointly) and your adjusted gross income (AGI) on their tax return does not exceed:

• $150,000 if married and filing a joint return or if filing as a qualifying widow or widower
• $112,500 if filing as head of household or
• $75,000 for eligible individuals using any other filing statuses, such as single filers and married people filing separate returns.

Payments will be phased out – or reduced -- above those AGI amounts. This means taxpayers will not receive a third payment if their AGI exceeds:

• $160,000 if married and filing a joint return or if filing as a qualifying widow or widower
• $120,000 if filing as head of household or
• $80,000 for eligible individuals using other filing statuses, such as single filers and married people filing separate returns.

For example, a single person with no dependents and an AGI of $77,500 will normally get a $700 payment (half the full amount). A married couple with two dependents and an AGI of $155,000 will generally get a payment of $2,800 (again, half the full amount). Filers with incomes of at least $80,000 (single and married filing separately), $120,000 (head of household) and $160,000 (married filing joint and surviving spouse) will get no payment based on the law.