Uh, no. That would mean you don't know the difference between profits and revenues, or just don't care.
Puh-leeze....
Without write-offs, all revenue would be considered profits, net vs. gross profits would be the same thing, which is a pretty dumb idea.
No, no, no.
"Write-offs" as you call them, are actually called expenses. There will still be expenses--payroll, utilities, rent, etc. Revenues will never be 100% profit because there will be offsetting expenses.
You're basically saying well if you brought in 100 grand, and it took a $30,000 piece of equipment and a person making $40,000 operating it that used $5,000 worth of electricity, took a $5,000 installation cost, and was rented inside of a building that costs $10,000 per year to rent and insure... that you made $100,000. See the problem?
No, I don't see the problem. Looks like you don't know what an income statement is or a balance statement. And I'm not saying that $100,000 was "made".
* the $30,000 piece of equipment would be a depreciable asset. The depreciation expense (or as you say, "write off") would be calculated using a formula usually covering a 7 or 10 year period.
* the operator's $40,000 salary is a payroll expense ("write off")
* $5,000 worth of electricity would be a utility expense
* $5,000 installation cost could be included in the depreciation expense.
* $10,000 rent would be a rent expense.
All told you have $55,000 in direct expenses, and approximately $5,000 in depreciable expenses. That is $60,000 in tax write-offs. Realize that the term "tax write-off" is meaningless under this new scheme because there is no corporate tax.
That's literally what you would end up with when you say there should be no write-offs.
Nope. Nada. Sorry.
In the meantime in the above example, you're proposing that the $100,000 that got brought in gets taxed 5%, the salary, electricity, rent, installation, etc., also gets taxed 5%.
Under the plan only products and services would get taxed, so salaries are not taxed, electricity is not taxed, rent is not taxed. Only the sale of $100,000 would be taxed and the $5,000 installation would be taxed, but over 7 or 10 years.
Suddenly instead of making $10,000 and getting taxed on that, you're paying $9,500 in taxes based on some misled idea that write-offs are unfair and you get to keep $500 of it.
It's obvious you don't understand how the plan works. Or how depreciation works as an expense. Under the new plan the tax would be $5,000 on the $100,000 sale and $250 on the equipment and installation (($35,000/7 years) * 5%)). So $5,250 in taxes.
Now let's look at the current system.
FICA and Medicare payroll taxes on $40,000 salary is $3,060 for the company to pay; $3,060 comes out of the employee's paychecks. So right there is $6,120 in payroll taxes alone.
There would likely be some sort of a local sales tax on the sale of the $30,000 piece of equipment.
It's a naive approach that has nothing to do with profitability or who uses the most public resources.
So there is no limit on profitability, no tax on profits, only on revenues. That has an attractive quality to it.