One rule per category, the same cents every month
Allocate every common expense by ownership share, floor area, equal parts, floor level, lift share or a custom rule.
Outcome
Amounts are computed in cents and the last cents assigned by the largest-remainder method, so allocations sum exactly to the invoice.
In practice
What managers and committees tell us it changes in the monthly routine.
Six allocation methods: ownership share, square metres, equal, per floor, elevator share, custom
Largest-remainder rounding — the shares always sum to the invoice total
Rule, share and amount stored on every allocation for the audit trail
Six methods: ownership share (per mille), square metres, equal parts, per floor, lift share, custom
Method set per expense category, so the lift invoice and the insurance premium follow different shares
Per-unit lift share, so a ground-floor unit can carry a zero share
Rounded to the cent by largest remainder — no rounding gap on any invoice
Allocations lock on approval, and every recalculation is written to the audit trail
How it works
Set the allocation method once per expense category — ownership share, square metres, equal, per floor, elevator share or a custom key — and every expense in that category is allocated the same way, cent for cent. A €1,240.00 electricity bill across 24 units becomes 24 owner shares that sum to exactly €1,240.00, with the rule and each share stored on the expense. Ground-floor shop excluded from the lift? Set its elevator share to zero.
Across Europe the deed or the building's regulations set the allocation key. In Cyprus that is typically the share recorded in the title deed; in Germany the Miteigentumsanteil in the Teilungserklärung; in France the tantièmes in the règlement de copropriété. Each unit stores its key — share, square metres, floor, elevator share — and the category decides which is used. Confirm the key against the registered document.
Approve the €1,240.00 invoice in the 'Electricity (common areas)' category and the engine reads the category's rule — ownership share — and computes each unit's amount in cents. Rounding uses the largest-remainder method: whole cents are assigned first, the leftover cents go to the units with the largest fractional remainders, so the 24 shares sum to exactly €1,240.00. Each allocation row keeps the share to six decimal places.
Give the ground-floor shop an elevator share of 0 and set the 'Elevator maintenance' category to the elevator-share method. The €300.00 quarterly service invoice is then divided among the units with a non-zero share only. Penthouse premium for the roof? Use a custom key. Each category keeps its own rule, so cleaning can be equal per unit while electricity follows ownership share in the same building.
Yes. Approved allocations are locked; changing a category's rule re-allocates only expenses that are not yet locked, and each allocation row keeps the method and share it was computed with. When an owner asks why they paid €51.67 of a €1,240.00 bill, the statement line shows the invoice total, the share (4.1667 %) and the rule. The audit trail records the rule change with user and timestamp.
In the product
Create recurring expense template dialog with vendor, fixed or variable amount type, gross amount including VAT, VAT rate, frequency and start date
Related
Ask about any building, owner or balance in plain language; the Domera assistant answers from your company's own records.
Learn moreOwners sign in and read their own units' statements, balances, payments, documents, compliance status and meetings.
Learn moreGenerate owner statements per unit and period, with every charge line, the payments applied and closing balances for both funds.
Learn moreStart with one building
Start the 14-day trial, add the first building and run one month through it. Import the owners, post the invoices, issue the statements.