Your Signed Rent Is Locked In
A fixed-term lease is a contract, and the rent you agreed to is one of its core terms. Your landlord can't unilaterally raise it partway through the term just because market rents went up or their own costs increased — they're bound by what you both signed, the same as you are.
Unless Your Lease Has an Escalation Clause
Some leases build in scheduled increases — for example, a 12-month lease that starts at $1,600 a month and specifies a $50 bump starting in month seven, bringing you to $1,650 for the rest of the term. If you signed a lease with a clause like that, it's generally enforceable, since you agreed to it upfront even if you didn't focus on it at signing. Read any lease you're considering carefully enough to notice a clause like this before you sign, not after the increase shows up on a rent statement partway through the year.
Utility Pass-Throughs Are a Separate Question
Some leases let a landlord bill you separately for a share of water, trash, or other utilities, and that charge can change during your lease term without being a "rent increase" in the legal sense, depending on how the lease defines it. Whether that's true for your lease comes down to the specific clause — a genuine utility pass-through tied to actual usage or a documented cost increase is a different animal from a landlord relabeling a rent increase as a "utility fee" to get around a fixed-term rent or a rent cap. If a new or growing charge shows up mid-lease under a name other than "rent," read the clause that supposedly authorizes it before assuming it's allowed.
What Happens Once the Fixed Term Ends
Once your fixed term expires and you move to a month-to-month tenancy — whether because your lease converts automatically or you just kept paying rent — the rules change. Your landlord can generally raise the rent with proper advance written notice, and how much notice is required is set by your state's law rather than a fixed national number, so don't assume a specific day count without checking.
A Cap Can Apply Regardless of Lease Type
Where a state caps annual rent increases, that cap typically doesn't care whether you're on a fixed lease or month-to-month. Washington's statute says so explicitly: the increase limit applies "regardless of whether the tenancy is month-to-month or for a term greater or lesser than month-to-month" (RCW 59.18.700(1)(a)). Oregon's rule likewise bars any increase during a tenancy's first year and then requires 90 days' notice and a cap of 7% plus inflation or 10%, whichever is less, without treating fixed and month-to-month tenancies differently (ORS 90.323, 90.324). If you're in a state with a cap like this, it can matter even during a fixed lease if your escalation clause would otherwise push you over it.
If Your Landlord Demands a Mid-Lease Increase Anyway
If your landlord tries to raise your rent mid-term without an escalation clause backing it up, you're generally within your rights to keep paying the amount in your signed lease and to say so in writing, citing the specific clause and the fact that your lease has a fixed term through a stated date. Keep records of the demand and your response in case it turns into a larger dispute — a dated letter or email referencing your lease's exact rent amount is worth more than a verbal disagreement if your landlord later tries to treat unpaid "extra" rent as a lease violation.
If your landlord threatens to end your tenancy over your refusal to pay a mid-lease increase that isn't backed by a clause, that's generally not a valid basis for eviction, since you're doing exactly what your lease requires. That said, don't ignore any formal notice you receive — respond to it in writing and, if it escalates, get a local tenant rights organization or legal aid office involved rather than assuming the dispute will resolve itself.
Before You Sign Your Next Lease
Read the entire document for any clause that lets rent change before the term ends — these aren't always labeled obviously as an escalation clause. Honestkey flags this kind of clause automatically when you upload a lease, so you're not relying on catching it yourself in the fine print.