Reconcile marina slip deposits, dockage, and metered utilities

Published October 5, 2026. This is a bookkeeping operations guide, not accounting, tax, legal, environmental, maritime, utility, or insurance advice.

The balance for a seasonal slip can include a reservation deposit, security deposit, base dockage, transient days, electricity, water, storage, keys, late charges, repairs, and a refund. Occupancy may move from one slip to another while the customer and vessel remain the same. A single customer ledger total therefore cannot explain what happened. The reconciliation needs four connected identifiers: customer, vessel, slip, and contract term.

Start with a contract register that records effective dates, vessel dimensions, assigned slip, approved rate basis, included services, deposit terms, utility-meter IDs, key or access-device count, and responsible manager. Keep contract amendments as dated versions. When a boat changes slips, close the first occupancy segment and create a second; do not overwrite the slip number because the old meter reading and rate may still drive the settlement.

Before arrivals, compare reservation and security deposits collected with bank receipts, customer records, and the deposit liability schedule. Investigate unidentified cash and contracts showing deposits without payments. Record opening utility readings with date, meter ID, unit, reader, and an image where the approved process requires it. A transposed meter ID at move-in can contaminate every later bill.

Build a slip-availability report separately from the financial schedule. It helps identify overlapping assignments, gaps, and vessel moves, but it is not the accounting record. The operations team owns slip assignment and safety. The bookkeeper uses approved occupancy facts to prepare charges and reconciliations.

For each reading cycle, retain prior and current readings, elapsed usage, rate version, fixed fees, taxes where applicable, and calculation. Highlight negative usage, zero usage on an occupied slip, implausible spikes, changed meters, and readings outside the occupancy dates. If a meter is replaced, record the closing reading for the old device and opening reading for the new one rather than forcing a continuous number.

Suppose Slip C-14 opens at 18,440 kWh and closes at 20,010 kWh. The draft charge uses 1,750 kWh because the clerk entered 18,260 as the opening. The workpaper preserves both readings, calculates the 180 kWh difference, and links the opening photo. The authorized marina owner approves the correction before billing. Bookkeeping does not quietly edit the source report.

Roll each deposit from receipt through authorized application or refund. Show cash received, transfers between contract terms, approved damage or unpaid-charge applications, forfeitures under the authorized decision, cash refunds, and ending balance. Do not net the deposit against dockage revenue when collected. At final settlement, list the gross customer charges, credits, deposit applied, and refund or amount due.

Damage claims need a separate evidence packet: condition reports, dated images, repair support, communications, and decision. The preparer assembles the record and arithmetic. Marina management or another authorized party decides responsibility, reasonableness, and whether contract terms allow an application. A missing access key similarly remains an open operational item until the authorized charge or waiver is documented.

Cancellations, substitutions, waiting-list deposits, transient-to-seasonal moves, and storm-related haul-outs create different financial outcomes. Give each event a code and effective date, and link it to the policy or contract version used by the decision maker. Never turn an operations note such as “boat never arrived” into a forfeiture without evidence of the approved decision.

The EPA offers marina and boating resources that provide environmental context, while the IRS recordkeeping page describes general support for business transactions. Neither dictates the marina's deposit, utility, or revenue treatment. Use current local requirements and qualified advice where needed.

First, tie deposit activity to cash and the liability schedule by customer and contract. Second, tie occupancy and meter records to invoices and credits. Third, tie billed activity, receipts, refunds, and open receivables to the ledger. Test selected customers end to end and selected ledger lines back to source. Review empty slips with usage, occupied slips without billing, refunded deposits with open charges, and old deposits with expired contracts.

Launch and haul-out dates create cutoff risks because office staff, yard staff, and customers may use different dates. Decide which approved event drives base dockage, storage, and utility periods, and retain the evidence for that event. A vessel physically present on land can have a closed slip segment and an open storage segment; it should not disappear from both schedules or be billed in both without support.

Before winter or storm preparation, produce a list of open utility readings, keys, deposits, and contract amendments by vessel. After the move, compare the yard or off-season inventory with the closed slip roster. This transition review catches a meter that was never read, a deposit left under an expired contract, or an access device still assigned after occupancy ended.

Separate marina-owned credits from utility-billing corrections. A courtesy dockage credit, a reversed meter charge, and a refunded deposit may all reduce a customer statement, but they need different approvals and ledger destinations. Preserve each gross event so the final balance does not hide why the customer received value.

Archive the contract register, occupancy history, meter evidence, billing calculation, deposit rollforward, exceptions, and approved final statements. Track unread meters, unidentified deposits, refund age, and overlapping slip assignments as handoff indicators. Keep privacy and payment access limited to the job. If your marina needs routine preparation without transferring rate or refund authority, explore Offshore Bookkeepers' services and request a scoped discussion.