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What is velocity banking?

Where the idea comes from

A traditional mortgage charges interest on a scheduled balance. You make one payment a month, the lender splits it between interest and principal according to an amortization table set at closing, and the money sitting in your checking account between paydays does nothing at all.

Velocity banking removes the gap between the two accounts. Instead of parking income in checking while a separate mortgage accrues interest, the line of credit is the account. Income lands on it and lowers the balance. Expenses draw off it and raise the balance. Interest is calculated on whatever the balance actually is, each day.

The result is that money you were going to spend anyway does a second job on its way out the door. It reduces the balance interest is calculated on for the days it sits there.

The three things that have to be true

This is a strategy with preconditions, and being honest about them is the difference between a tool and a pitch.

You need a monthly surplus. The balance only falls if income exceeds expenses plus interest. If you finish the month with nothing left over, velocity banking does not work slowly — it does not work at all.

You need to tolerate a variable rate. A first-lien line is variable by nature. The rate can move, and a fixed mortgage at a low rate is a genuinely hard thing to beat.

You need to stay in budget. The line is accessible. That is the point, and it is also the risk. A line you can draw on is a line you can draw on for things that are not in the plan.

What it is not

It is not a way to pay off a mortgage without money. The dollars come from your surplus, the same surplus that would fund extra principal payments.

It is not a loophole in how interest is calculated. Interest on the actual daily balance is an ordinary feature of a line of credit, not a trick.

It is not free of risk. The line is secured by your home, and a first-lien line can be frozen or reduced under the same rules that apply to any home equity line.