Keystone Security Deposit Calculator (2026) — Free
One missed deadline. One wrong deduction. That's all it takes to owe 2x penalties in Keystone. Calculate your exact limits before it costs you.
Calculate Your Security Deposit Limits
Results for Keystone, SD
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result
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deadline / notice
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penalty if violated
Keystone Security Deposit by Unit Size
Here are the amounts at Keystone's current Fair Market Rents:
| Unit Size | Median Rent | Max Deposit (1mo) | Penalty Risk |
|---|---|---|---|
| Studio | $921/mo | $921 | $1,842 |
| 1-Bedroom | $1,018/mo | $1,018 | $2,036 |
| 2-Bedroom | $1,336/mo | $1,336 | $2,672 |
| 3-Bedroom | $1,743/mo | $1,743 | $3,486 |
| 4-Bedroom | $2,178/mo | $2,178 | $4,356 |
Rents based on HUD Fair Market Rents (FY2026) for Pennington County.
Penalty Warning
If you fail to return the deposit within 14 days, a Keystone tenant can sue for up to 2x the amount wrongfully withheld, plus attorney fees. Tenant may recover up to 2x the deposit for wrongful withholding
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For the full breakdown of rules, deadlines, and procedures, see our Keystone Security Deposit Laws guide.
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Reviewed by Rachid Abadli
Founder & CEO, LeaseBase · Sacramento landlord · Self-managing since 2019
LeaseBase is a property management platform — not a law firm. Consult an attorney for legal advice specific to your situation.
