How is the Rust upkeep cost worked out?

Rust

Upkeep Cost

In Rust you pay rent. Each block within a tool cupboard's range costs resources every twenty-four hours, and the rate goes up as the base gets bigger — which is how a build that seemed cheap at fifty blocks turns into a second job at four hundred.

Upkeep Cost

Include every block in the tool cupboard's range — floors and foundations too, not only walls.

Wood blocks

Stone blocks

Sheet metal blocks

Armoured blocks

Upkeep rate by building size

≤ 20 blocks — 10%
≤ 100 blocks — 20%
≤ 250 blocks — 33%
≤ 500 blocks — 50%
> 500 blocks — 60%

33%

Your upkeep rate

160 blocks total

11,880

Stone per day

2,640

Metal Fragments per day

How the numbers are worked out

Rather than a fixed price per block, upkeep is a slice of each block's placement cost, and how big a slice depends on the size of everything the cupboard covers. Small bases are charged ten per cent of their build cost a day; large ones sixty. So: block count, times the placement cost for that tier, times the rate for your overall size, equals your daily bill. We print the bracket table right by the inputs — check it against the live game instead of trusting us.

The formula

upkeep rate = 10% ≤20 blocks · 20% ≤100 · 33% ≤250 · 50% ≤500 · 60% above
daily cost = blocks × cost per block × upkeep rate
wood 200 · stone 300 · sheet metal 200 frags · armoured 25 HQM per block

Common mistakes

Walls get counted; floors, ceilings, foundations and stairs get forgotten — yet each is a block and each is charged. The other shock is the bracket boundary: one extra block that takes you past two hundred and fifty into the next tier raises the rate for the whole base in one go, not only for that block. An upkeep jump with no obvious cause is nearly always this.

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