Lightning Liquidity Marketplaces: Inbound Capacity Compared

Why Inbound Liquidity Matters

Every Lightning Network node faces the same cold-start problem: you can send payments immediately after opening a channel, but you cannot receive anything until someone else commits inbound liquidity to your node. A brand-new node with a single 1,000,000 sat outbound channel has zero receiving capacity. This makes accepting payments, running a merchant point-of-sale, or operating a routing node impossible until the liquidity gap is resolved.

Several approaches have emerged to solve this problem: peer-to-peer marketplaces, protocol-level auctions, automated Lightning Service Providers (LSPs), and informal community channels. Each comes with different pricing, trust assumptions, and technical requirements. The following comparison covers the major options available as of mid-2026.

For background on how Lightning liquidity works at a protocol level, see our deep dive on Lightning Network liquidity explained and the liquidity marketplace analysis.

Lightning Liquidity Marketplaces Compared

The following table provides a high-level comparison of the major liquidity sources available to Lightning node operators. Each option is explored in detail below.

Marketplace Deep Dive

Magma by Amboss

Magma is the most widely used Lightning liquidity marketplace. Operated by Amboss, it functions as a peer-to-peer platform where node operators list channel offers specifying capacity, price, and duration. Buyers browse listings, evaluate sellers using Amboss's node scoring system, and purchase inbound capacity. Payment is made over Lightning using HODL invoices as an enforcement mechanism, and the seller opens a channel to the buyer.

Pricing is market-driven: sellers set their own rates, creating competition. Platform fees are 1% for non-subscribers, 0.75% for Node Runner tier subscribers, and 0% for Builders tier and above. The fixed transaction fee is 500 PPM (0.05%). In practice, large channels (1 BTC or more) average around 2.6% APR, while smaller channels under 1,000,000 sats often exceed 4% APR due to the proportionally higher impact of on-chain fees.

Magma V2 launched in August 2025 with AI-assisted matching, followed by Magma AI in December 2025. These updates improved the process of pairing buyers with well-connected, reliable sellers. Magma requires no special software beyond a standard Lightning channel node: the web-based interface makes it accessible to operators running LND, Core Lightning, or Eclair.

Lightning Pool by Lightning Labs

Lightning Pool, launched in November 2020, uses a non-custodial batch auction system. Buyers and sellers submit bids and asks for channel leases, and auctions clear at regular intervals tied to Bitcoin blocks. All matched orders in a batch pay or receive the same uniform clearing rate, denominated as an annualized percentage. Settlement is on-chain, making it trustless.

The minimum channel size is 100,000 sats, with channels up to 5 BTC supported. The standard lease duration is approximately 2,016 blocks (roughly two weeks). Pool requires running litd (Lightning Terminal) alongside LND, adding operational complexity.

As of mid-2026, Lightning Pool's activity has declined significantly from its 2021-2022 peak. Lightning Labs has shifted development focus toward Taproot Assets and other protocol work. The auction system still functions but has low liquidity and few active participants. It is not formally deprecated but is effectively in maintenance mode.

Liquidity Ads (Core Lightning)

Liquidity Ads represent the most protocol-native approach to the liquidity problem. Defined in BOLTs PR #878 and built on the dual-funding protocol, Liquidity Ads allow a node to advertise available liquidity via the gossip network. A connecting peer can request that the advertising node contribute funds to a dual-funded channel.

Sellers set two fee components: a funding weight fee (fixed cost based on transaction weight) and a lease fee rate (proportional to the liquidity provided, expressed in basis points). For example, a 1,000,000 sat lease at 50 basis points with a 500 sat base fee costs approximately 5,500 sats plus on-chain fees. The seller's funds are locked for the lease duration (typically 4,032 blocks, roughly 28 days) using CSV timelocks, preventing early unilateral closure.

Adoption remains limited because Liquidity Ads are currently implemented only in Core Lightning and Eclair. LND has not added support. Both peers must run compatible implementations, and no centralized marketplace aggregates offers: discovery relies entirely on the gossip protocol. Despite these limitations, Liquidity Ads are the most decentralized option, requiring no intermediary or platform.

LSP Services

Lightning Service Providers abstract away channel management entirely. Rather than manually purchasing inbound capacity, users rely on an LSP to open channels, provision liquidity, and handle routing automatically. The LSPS specification (bLIP-50 through bLIP-52), finalized in 2025, aims to standardize LSP protocols so wallets can connect to multiple providers interchangeably. For a deeper look at the LSP model, see our guide on Lightning Service Providers explained.

Phoenix (ACINQ)

Phoenix uses automated JIT (just-in-time) channel provisioning with splicing. When a user receives a payment that exceeds their current inbound capacity, Phoenix automatically splices the channel to accommodate it. The wallet maintains a single dynamic channel that grows and shrinks as needed, with no manual intervention required.

Phoenix charges a 1% liquidity fee on new inbound capacity provided (minimum 3,000 sats), plus mining fees for the on-chain splice transaction. Standard routing fees are 0.4% + 4 sats per forwarded payment. For payments within existing capacity, only the routing fee applies. ACINQ also offers phoenixd, an HTTP API daemon for server-side integration. This model is considered state-of-the-art for mobile Lightning UX but comes with a single-LSP trust tradeoff.

Breez SDK and Olympus (ZEUS)

Breez operates as an LSP for both its own wallet and third-party apps built on the Breez SDK. The newer Breez SDK Liquid variant uses submarine swaps via the Liquid Network, with fees around 0.1% + ~53 sats for sending and 0.25% + ~47 sats for receiving. Breez has deprecated its original Greenlight backend in 2025, pivoting to Liquid and Spark-based backends.

Olympus by ZEUS provides automated channel opens via its embedded LDK-based node, charging a flat ~250 sats per received channel using zero-conf JIT channels. ZEUS expanded Olympus integrations in 2025, adding support for third-party wallets and a "purchase channels in advance" option. Both Breez and Olympus follow the emerging LSPS specification for interoperability.

Voltage Flow (Deprecated)

Voltage Flow was an enterprise-focused LSP that provided JIT channel opens bundled with Voltage's cloud Lightning node hosting. Voltage deprecated Flow 2.0 in September 2024, stopping new channel creation and beginning channel closures in November 2024. No replacement LSP service has been announced. Voltage now focuses exclusively on managed LND node hosting.

Community and Manual Options

For operators willing to invest time instead of money, community-based options provide liquidity without marketplace fees.

Lightning Network+ (lightningnetwork.plus) facilitates cooperative channel opening through "rings of fire." Participants (typically 3-5 nodes) join a ring where each opens a channel to the next member. Every participant both gives and receives inbound liquidity with no net capital outlay: the only cost is on-chain fees. Ring organizers set minimum channel sizes (commonly 500,000 to 2,000,000 sats), and members are expected to keep channels open for 3-6 months by social convention. Enforcement is reputation-based rather than protocol-enforced.

PlebNet and other Telegram/Discord communities offer informal channel requests. Operators post their node pubkey and desired channel size, and willing peers respond. These arrangements are free or reciprocal but come with no reliability guarantees or SLAs. Activity levels have moderated from peak levels in 2021-2022.

Pricing Comparison

The cost of acquiring 1,000,000 sats (0.01 BTC) of inbound liquidity varies significantly across platforms. The following table estimates costs under typical mid-2026 conditions with moderate on-chain fees (~10 sat/vbyte).

On-chain fee conditions significantly affect total cost. During high-fee periods, opening and closing a 2,000,000 sat channel can cost 5,000 to 20,000 sats (0.25% to 1% of channel value), making small channel purchases uneconomical. Use our Lightning channel calculator to estimate costs for your specific channel size.

How to Choose a Liquidity Source

The right option depends on your role, technical capabilities, and how much you value convenience versus cost.

If you are running a routing node and need reliable, large-capacity inbound channels: Magma is the strongest choice. The marketplace offers the widest selection of sellers, node quality scoring, and flexible lease durations. The web interface is straightforward, and it works with all major Lightning implementations.

If you prioritize decentralization and run Core Lightning: Liquidity Ads are the most protocol-native solution. No intermediary is involved, and lease enforcement is handled by on-chain timelocks. The tradeoff is limited peer compatibility and no centralized discovery.

If you are a mobile wallet user who wants zero configuration: Phoenix or ZEUS handle liquidity transparently. You never interact with channel management directly. The cost is higher per unit of liquidity, but the complexity savings are substantial for non-technical users.

If you are a developer building a Lightning-integrated application: the Breez SDK provides programmatic liquidity provisioning with APIs and SDKs designed for integration rather than manual operation.

If you want free liquidity and are willing to invest time: LN+ rings provide reciprocal capacity at zero cost beyond on-chain fees. The tradeoff is setup time, coordination overhead, and reputation-only enforcement.

The Fundamental Problem with Channel Liquidity

All of the options above are solutions to a constraint inherent to Lightning's payment channel model: capacity must be pre-committed before payments can flow. This creates a capital efficiency problem. The Lightning Network holds over 5,600 BTC in public channel capacity, yet most of that capital sits idle at any given moment. The network's capacity Gini coefficient of approximately 0.97 indicates extreme concentration, with a small number of large operators controlling the majority of liquidity.

Spark takes a fundamentally different approach. Built as a Bitcoin Layer 2 using a statechain-based model, Spark eliminates payment channels entirely. There are no channels to open, no inbound capacity to purchase, and no fixed liquidity constraints. Users can receive payments immediately without pre-committed capital from a counterparty. For a detailed comparison of how Spark differs from Lightning, see our guide to Spark and the Lightning vs Spark glossary entry.

Frequently Asked Questions

What is inbound liquidity on the Lightning Network?

Inbound liquidity is the amount of bitcoin held on the remote side of your Lightning channels. It represents your receiving capacity: the maximum amount you can accept in a single payment. If all your channel balance is on your side (outbound), you can send but not receive. Acquiring inbound liquidity requires someone else to commit capital toward your node, either by opening a channel to you or through dual-funded channels.

How much does Lightning inbound liquidity cost?

Costs vary widely by platform and channel size. On Magma, large channels (1 BTC+) average around 2.6% APR while smaller channels under 1,000,000 sats often exceed 4% APR. LSPs like Phoenix charge 1% of the liquidity amount plus mining fees. Community options like LN+ rings are free beyond on-chain transaction fees. The capital opportunity cost floor is set by risk-free returns: with US Treasury yields around 4.3% in mid-2026, liquidity providers need to earn at least that to justify locking capital in Lightning channels.

What is the best Lightning liquidity marketplace?

Magma by Amboss is the most active and widely used Lightning liquidity marketplace as of mid-2026. It offers the broadest selection of sellers, supports all major Lightning implementations, and provides node quality scoring to help buyers evaluate counterparties. Lightning Pool was a strong alternative but has seen declining activity. Liquidity Ads offer the most decentralized approach but require Core Lightning on both ends. The best choice depends on your implementation, budget, and whether you prioritize decentralization or convenience.

Do I need inbound liquidity to receive Lightning payments?

Yes, on the Lightning Network you cannot receive payments without inbound liquidity. This is a fundamental constraint of the payment channel model: someone must have committed funds on their side of a channel pointing to your node. This is why liquidity marketplaces and LSPs exist. Alternative Bitcoin Layer 2 protocols like Spark eliminate this requirement by using a different architecture that does not depend on pre-funded channels.

What are Liquidity Ads in Core Lightning?

Liquidity Ads are a protocol-level feature in Core Lightning that lets nodes advertise available liquidity via the Lightning gossip network. A connecting peer can request that the advertising node contribute funds to a dual-funded channel at the advertised rate. The seller's capital is locked for the lease duration (typically 4,032 blocks, roughly 28 days) using CSV timelocks, ensuring they cannot close the channel early. This is the most decentralized liquidity acquisition method, requiring no external marketplace or intermediary.

What is an LSP and how does it provide liquidity?

A Lightning Service Provider is a node operator that handles channel management and liquidity provisioning on behalf of end users. When you receive a payment through an LSP-powered wallet like Phoenix or ZEUS, the LSP detects that you lack sufficient inbound capacity and automatically opens or splices a channel to accommodate the payment. This just-in-time approach abstracts away the liquidity problem entirely, but introduces a dependency on a single service provider.

Can I get free Lightning inbound liquidity?

Yes, through community-based options. Lightning Network+ facilitates reciprocal "rings of fire" where participants exchange channel opens at no cost beyond on-chain fees. PlebNet and other community groups on Telegram and Discord coordinate free or reciprocal channel requests. The tradeoff is reliability: these arrangements depend on social trust rather than protocol enforcement, and there are no guarantees that peers will keep channels open for any specific duration.

This tool is for informational purposes only and does not constitute financial advice. Pricing data is approximate and based on publicly available information as of mid-2026. Marketplace rates, LSP fees, and on-chain costs fluctuate frequently. Always verify current pricing directly with each platform before making liquidity decisions.