📅 Storage Unit Cost Over Time Calculator

Project your total storage unit cost over time, including any one-time administrative or lock fees.

Monthly rate ($)

Number of months

One-time fee ($)

What the total covers

The rent is treated as flat, so the projection is a single multiplication plus the fees you pay once:

total = monthly rate × months + one-time fee

At the starting values, $100 a month for six months with a $25 fee, the total is $625 — an effective $104.17 a month. Nothing is compounded and no interest is applied; a month is a billing cycle, not 30 days.

Making the projection match the contract

Rate rises are not modelled. Introductory pricing usually steps up after six or twelve months. Run it twice and add: $100 for six months is $600, then $130 for the next twelve is $1,560, so $2,160 of rent before fees.
Monthly extras belong in the monthly rate. A facility protection plan or tenant insurance is billed every cycle, so a $100 unit with $12 of cover is 112 in that box.
The one-time box is for admin and setup: the account fee, a disc lock, a moving-in charge. Put a first-month-free promotion in by dropping one month from the count instead.

The number worth staring at is the total, not the monthly. Two years at $100 is $2,400, which is more than the replacement cost of a lot of what typically ends up in a unit.

Most facilities bill by the month with no refund for a part month, so moving out on the 3rd usually costs the same as moving out on the 30th. Time your exit to the billing date.

Frequently asked questions

How much does a storage unit cost for a year?

Twelve months at $100 with a $25 setup fee is $1,225. Change the monthly rate to your quoted price; unit size and climate control move it more than anything else does.

Is renting a storage unit cheaper than replacing the contents?

Add up the total, then price the furniture and boxes inside it honestly at second-hand value. Anything you would not buy again for the price of the projected rent is costing you money to keep.

Does this include the deposit?

Only if you enter it. A refundable deposit is not really a cost, so leave it out and track it separately; a non-refundable admin fee is exactly what the one-time box is for.