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Special Assessment Calculator
Calculate your share of a special assessment using the three common allocation methods: equal share per unit, pro rata by square footage, or pro rata by assessed value. Includes financing math if the assessment is amortized over months.
0 = lump sum
Your special assessment
$4,524
Monthly payment if financed
$138
Total paid over term
$4,954
Interest cost
$431
How the math works
Special assessments divide project costs across owners in three common ways: equal share per unit (simple), pro rata by square footage (fair for larger units), or pro rata by assessed value (wealth-weighted). The association's governing documents control which method applies.
Most associations allow owners to either lump-sum or finance over 2-5 years. Interest on a financed special assessment is typically not tax-deductible on a primary residence. On rental units, it may be treated as a repair or capital improvement depending on scope.
How to Use
- Enter the total project cost being assessed.
- Choose the allocation method from your governing documents.
- Enter total units, square footage, or values as applicable.
- Enter financing months and rate if the assessment will be amortized.
- See your share, monthly payment, and total interest cost.
Frequently Asked Questions
Is a special assessment tax deductible?
On a primary residence — usually not. On a rental property — it may be a current-year repair (small) or capital improvement (larger) depending on nature. Talk to a tax advisor.
Can I refuse to pay a special assessment?
No. Once properly levied per governing documents, assessments are enforceable via lien and eventually foreclosure. You can vote against it at a meeting, but once passed, you owe your share.
Which allocation method is most common?
Equal share per unit is most common in condos of similar size. Pro rata by square footage is common in mixed-size buildings. Pro rata by value is rarer and more common in luxury developments.
Should I lump sum or finance?
Lump sum if you have the cash and the financing rate is high. Finance if cash is tight or you can earn more elsewhere. For 3-5 year terms at 5-7%, many owners finance.
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