Security Deposits

Can a landlord increase the deposit after move-in?

Michigan rental guidance and tenant-landlord operational information.
Published February 2, 2026 State-specific rental guidance Update This Question
Reviewed by Tenants & Landlords Editorial Team

This rental guidance was reviewed by the Tenants & Landlords Intelligence Team, specializing in lease agreements, notices, rent disputes, deposits, evictions, and tenant-landlord operational procedures.

Asked 120 days ago · Michigan

Michigan Tenant Guidance: Can a Landlord Increase the Security Deposit After Move-In?

If you are renting a property in Michigan, understanding your rights and obligations regarding security deposits is crucial. One common question tenants often ask is whether a landlord can increase the security deposit after the lease has begun. This guide provides detailed information on Michigan laws applicable to security deposits, including whether and how a landlord can raise the deposit amount after you have moved in.


Understanding Security Deposits in Michigan

Under Michigan law, a security deposit is typically collected at the start of a tenancy to protect the landlord against damages beyond normal wear and tear, unpaid rent, or other breaches of the rental agreement. Michigan does not limit the maximum amount a landlord can request as a security deposit by statute, but the amount should be reasonable and consistent with the lease terms.


Can a Landlord Increase the Security Deposit After Move-In?

Short Answer:
In Michigan, a landlord generally cannot unilaterally increase the security deposit after the tenant has moved in, unless the parties agree to this change in writing or the lease explicitly provides a mechanism for such an increase.


Important Considerations

  1. Lease Agreement Controls
- The lease you sign at the start of tenancy governs the amount of the security deposit. - If the lease specifies the deposit amount, the landlord cannot demand more mid-lease without your consent. - Some leases may include clauses allowing adjustments, but these are uncommon.
  1. Mutual Agreement Is Required
- For an increase in the security deposit after move-in, both landlord and tenant must agree in writing. - This could occur if circumstances change, such as adding a roommate or changing the lease terms.
  1. No Statutory Right for Unilateral Increase
- Michigan law does not specifically authorize landlords to raise deposits during an active lease term. - Attempting to increase it without agreement may be considered a breach of contract or harassment.
  1. At Lease Renewal
- The landlord may propose a higher security deposit amount when the lease is up for renewal. - You are not obligated to agree, and you can choose to end your tenancy instead.
  1. Separate from Rent Increases
- The rules for rent increases are separate and subject to lease terms and notice requirements. - A landlord cannot simply convert rent increases into additional security deposits.

Practical Tips for Tenants in Michigan

  • Review Your Lease Carefully:
Ensure you understand the terms regarding the security deposit and whether any provisions allow adjustments during your tenancy.
  • Keep Communication in Writing:
If your landlord requests an increase, ask for a formal written notice, and only agree in writing. Avoid verbal agreements.
  • Know Your Rights:
Decline any demand for an increased deposit that is not supported by your lease or a signed agreement.
  • Document Your Property Condition:
Conduct thorough move-in inspections and keep records and photos. This protects your deposit and counters landlord claims of damage.
  • Seek Legal Advice if Needed:
If your landlord insists on raising the deposit unlawfully, you may consult a tenant rights organization or an attorney familiar with Michigan landlord-tenant law.

Summary

In Michigan, once a lease is signed and the tenant has moved in, the security deposit amount agreed upon initially cannot be increased by the landlord unless both parties mutually agree. The lease agreement is the primary document governing this issue, and any attempts to raise the deposit mid-lease without tenant consent are not supported by Michigan law. Tenants should be vigilant, maintain clear communication, and understand their rights to avoid undue financial demands during their tenancy.


If you are experiencing difficulties with your landlord over security deposits or other rental matters, consider reaching out to local tenant advocacy groups or legal services specializing in Michigan housing law for further assistance.

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