How does a high debt/deficit lead to higher interest rates

Economics Economics Questions
1

I get that it leads to higher taxation because the government has to pay back the debt. The connection there is obvious.

Many analysts say that a high debt now leads to higher interest rates in the future. But if the government owes

money all it can do is tax. It can borrow from our banking industry but that is silly. Paying off borrowed money

with borrowed money means you pay more than you have to.

2

As a debtor takes on more and more debt, creditors won’t lend unless there is a higher return to offset the increased risk that the debtor won’t be able to service their debt load.

3

but people say domestic rates will increase

how?

4

Also, government bonds (aka, government debt) looks more like a risky investment, so people will only buy it if they are “guaranteed” a higher interest rate.