Selected allocation basis; no adjustment rule matched.
Allocation weight after rules: 1
Try Mabna’s real allocation calculator
Your building. Your rules. Every share explained.
Explore a sample building, edit its apartments, and apply your own rules. Preview exactly what each apartment owes using the same calculator as your workspace.
Start with a real scenario
Each apartment’s share — and why
EGP 6,000.00
Shares use the same exact piastre allocation as the full product. Remaining piastres are assigned deterministically so the total reconciles.
Selected allocation basis; no adjustment rule matched.
Allocation weight after rules: 1
Share of the bill based on this apartment’s metered consumption.
Selected allocation basis; no adjustment rule matched.
Allocation weight after rules: 1
Share of the bill based on this apartment’s metered consumption.
Selected allocation basis; no adjustment rule matched.
Allocation weight after rules: 1
Total allocated: EGP 6,000.00 — matches the expense.
Use these capabilities for your real building
Create your workspace to save allocation rules, charges, and payments. After previewing, choose “Continue with this calculation” in the results to carry your units and rules into association setup for review before saving.
Add my MabnaHow are building expenses divided?
Choose equal shares, ownership percentage, or meter consumption, then apply your association’s agreed adjustments. The examples above are editable assumptions.
Start with a basis
Equal allocation gives each participating apartment the same weight. Ownership percentage allocates proportionally. A vacant-apartment multiplier changes its weight before the total is distributed.
Apply rules to matching apartments
Combine conditions for floor, occupancy, type, or tags. Exclude matching apartments, multiply their weight, or assign a fixed amount or percentage. Rule priorities control the order; exclusions and fixed contributions stop further rules for that apartment.
Review every share before posting
The preview explains matched rules and reconciles all shares to the expense. Metered apartments receive their consumption-based share; apartments without readings split the remainder. In your workspace, previewing remains separate from creating charges.
Guides to splitting building expenses
How to split building expenses between apartments
Equal split or by ownership share? Compare the common ways owners associations divide shared building expenses, how to treat vacant apartments, and try them in a free calculator.
How to split elevator costs between apartments
Should the ground floor pay for the elevator? Four common ways owners associations split elevator maintenance and electricity, with a free calculator to test your building's rule.
How to split the water bill using apartment meters
Split a shared water bill by each apartment's meter reading, then share the unmetered remainder fairly. Step by step, with a free calculator to try it.
How much should a shop pay toward building expenses?
Fixed amount, percentage or exclusion: common ways owners associations set a ground-floor shop's share of building expenses, with a free calculator to compare them.