How Philippine inter-island freight rates are calculated

Philippine inter-island freight rates for tramp cargo services are not regulated. Republic Act No. 9295, the Domestic Shipping Development Act of 2004, removed MARINA's authority to set or approve freight rates for tramp operations — the voyage and trip time charters used for most bulk and project cargo moves.1 The rate you receive from an operator reflects the actual economics of your specific voyage: what the fuel costs, what the vessel costs to operate, what the ports charge, and what margin the operator needs to make the voyage commercially viable. There is no published schedule you can benchmark against.

What makes Philippine inter-island rates structurally higher than comparable moves in other Southeast Asian markets is not opacity or price-gouging. It is a combination of fuel exposure, port cost structure, and a domestic tax burden that falls entirely on Philippine-flagged operators with no equivalent applied to foreign shipping lines operating in the international trade. Understanding the components makes it easier to evaluate a quote, identify where negotiating room exists, and plan a project budget that does not get repriced halfway through.

Every inter-island freight quote starts with the same cost structure, regardless of vessel type or route. The variables change; the categories do not.

1. 01Bunker fuel. The single largest variable cost on any voyage. Philippine inter-island operators burn Very Low Sulfur Fuel Oil (VLSFO) following the MARINA sulfur cap that took effect January 1, 2025, which eliminated the lower-cost high-sulfur option entirely. Manila VLSFO spot prices track Singapore hub pricing with a premium for domestic distribution logistics.3 On a 200-nautical-mile voyage at 8 knots, a mid-sized LCT consumes approximately 8 to 12 tonnes of fuel one way. At current Manila VLSFO prices, that is a significant line item before any other cost is applied.
2. 02Vessel operating cost. The daily cost of running the vessel: crew wages, provisions, lubricating oils, maintenance and repair allocation, insurance, and classification society fees. This cost runs whether the vessel is loaded, in ballast, or at berth. A voyage quote must recover a proportionate share of this daily cost over the number of days the voyage requires, including loading and discharge time.
3. 03Ballast leg recovery. Unless a return cargo exists on the same route, the vessel returns empty. That empty return voyage burns fuel, runs up vessel operating cost, and delivers no revenue. Its full cost is embedded in the loaded voyage rate. A Cebu-to-Davao move is commercially a round trip, even if only one leg carries cargo. This is the cost that most shippers underestimate when comparing Philippine inter-island rates to international benchmarks.
4. 04Port dues and cargo charges. Both load and discharge ports levy charges on the vessel (based on gross tonnage) and on the cargo (wharfage, arrastre, stevedoring). These are port-specific and are detailed in the next section.
5. 05Operator margin. The markup above total cost that reflects route risk, weather seasonality, commercial credit terms extended to the shipper, and the operator's assessment of market conditions on the route.

The Philippine Ports Authority (PPA) administers port dues and cargo charges at all PPA-managed ports.4 For domestic inter-island cargo, the charge categories are port dues on the vessel (per gross tonnage, levied on each entrance and departure), wharfage on the cargo (per revenue ton), and cargo-handling charges (arrastre and stevedoring, which are contracted separately to accredited stevedoring companies and vary significantly by port).

Beaching deliveries at sites with no PPA port infrastructure do not attract wharfage, because there is no wharf. This is one of the cost advantages of beaching operations that is rarely factored into project budgets: eliminating the port call at the destination removes wharfage, arrastre, and stevedoring costs on the discharge side. It also removes the port scheduling dependency. The offset is the operational complexity and weather dependency of the beach landing, which adds a risk premium to the freight rate itself.

Philippine domestic shipping operators carry a tax load that has no equivalent in the international trade. Philippine-registered operators pay corporate income tax, value-added tax on services rendered, and a common carrier's tax on gross receipts. The combined effective rate applies to every domestic voyage. International shipping lines operating into Philippine ports under bilateral agreements pay tax at a fraction of this rate on their Philippine-sourced income. The Cabotage Law reserves domestic inter-island trade exclusively for Philippine-flagged vessels,1 but it does not equalise the tax treatment. Every domestic freight rate must absorb the full domestic tax load; there is no alternative structure available.

Philippine operators pay the full domestic tax rate on every voyage. International lines do not. That difference is in your freight quote whether anyone explicitly labels it or not.

This structural cost difference is not a justification for inefficiency. It is a factual component of the rate that shippers comparing Philippine inter-island quotes to regional benchmarks or international shipping costs need to account for. A rate that looks high against a Singapore-to- Cebu quote from a foreign liner is not necessarily overpriced — it is operating under a fundamentally different cost structure.

When a cargo inquiry reaches us, the first calculation is the voyage fuel budget. We take the route distance, divide by the planned speed, multiply by the vessel's consumption rate at that speed, and price the result at the current Manila VLSFO spot price with a small forward buffer for price movement between quotation and the loading date.3 Fuel is quoted at market rate; we do not lock in fuel cost at the quotation stage unless the charter party contains a specific bunker adjustment clause.

We then add the vessel operating cost allocation for the estimated voyage duration: transit time plus loading and discharge time at the agreed laytime. Port charges at both ends are estimated from the cargo weight and the PPA tariff applicable at each port. The ballast leg cost is added if no return cargo is available. The sum of these components is the cost floor. The freight quotation is above that floor by a margin that reflects route risk, payment terms, and the commercial relationship with the charterer.

For beaching deliveries, the quote also includes a site assessment cost if we have not previously operated at the destination. We do not commit to a beaching delivery without verifying the site. If the site assessment identifies conditions that require a different approach — tidal constraints, substrate problems, swell exposure — the freight may be revised or the delivery method changed before the charter party is signed.

Two identical routes quoted one month apart can produce materially different freight rates. The variables that drive this are not random.

Fuel price. Manila VLSFO spot prices have moved by more than 20 percent over three-month periods in recent years, driven by Singapore hub pricing which in turn reflects global crude benchmarks and regional refinery capacity.3 A quote issued today is valid for the period specified. If you want to fix your freight cost against future price movement, a charter party with a bunker adjustment clause can lock the fuel component at the quotation price.

Typhoon season premium. Voyages planned for the June-to- November window carry a weather contingency that off-season quotations do not. This covers the probability of route disruption, extended port waiting time, and the cost of alternate shelter if the vessel has to divert mid-voyage. It is not a surcharge we add arbitrarily — it is the expected value of weather-related delay on that route during that period, based on historical typhoon track data.

Vessel availability and fleet position. If a vessel is positioned close to your load port at the time of inquiry, the ballast leg cost is low and the rate benefits. If the nearest available vessel is repositioning from a distant port, the ballast cost is higher and the rate reflects it. Giving us advance notice of a requirement — even a provisional inquiry three to four weeks ahead — allows us to position a vessel efficiently and pass that saving on to the freight.