diff --git a/json/src/v28/mod.rs b/json/src/v28/mod.rs
index 691a6e6..22c7e57 100644
--- a/json/src/v28/mod.rs
+++ b/json/src/v28/mod.rs
@@ -90,7 +90,7 @@
 //! - [ ] `joinpsbts ["psbt",...]`
 //! - [ ] `sendrawtransaction "hexstring" ( maxfeerate maxburnamount )`
 //! - [ ] `signrawtransactionwithkey "hexstring" ["privatekey",...] ( [{"txid":"hex","vout":n,"scriptPubKey":"hex","redeemScript":"hex","witnessScript":"hex","amount":amount},...] "sighashtype" )`
-//! - [ ] `submitpackage ["rawtx",...] ( maxfeerate maxburnamount )`
+//! - [x] `submitpackage ["rawtx",...] ( maxfeerate maxburnamount )`
 //! - [ ] `testmempoolaccept ["rawtx",...] ( maxfeerate )`
 //! - [ ] `utxoupdatepsbt "psbt" ( ["",{"desc":"str","range":n or [n,n]},...] )`
 //!
@@ -180,6 +180,10 @@
 //! **== Zmq ==**
 //! - [ ] `getzmqnotifications`
 
+mod raw_transactions;
+
+#[doc(inline)]
+pub use self::raw_transactions::{SubmitPackage, SubmitPackageTxResult, SubmitPackageTxResultFees};
 #[doc(inline)]
 pub use crate::{
     v17::{
diff --git a/json/src/v28/raw_transactions.rs b/json/src/v28/raw_transactions.rs
new file mode 100644
index 0000000..7ed6d7f
--- /dev/null
+++ b/json/src/v28/raw_transactions.rs
@@ -0,0 +1,112 @@
+// SPDX-License-Identifier: CC0-1.0
+
+//! The JSON-RPC API for Bitcoin Core v28.0 - raw transactions.
+//!
+//! Types for methods found under the `== Rawtransactions ==` section of the API docs.
+
+use std::collections::HashMap;
+
+use bitcoin::{Amount, FeeRate, Txid, Wtxid};
+use serde::{Deserialize, Serialize};
+
+/// Models the result of JSON-RPC method `submitpackage`.
+//submitpackage ["rawtx",...] ( maxfeerate maxburnamount )
+//
+//Submit a package of raw transactions (serialized, hex-encoded) to local node.
+//The package will be validated according to consensus and mempool policy rules. If any transaction passes, it will be accepted to mempool.
+//This RPC is experimental and the interface may be unstable. Refer to doc/policy/packages.md for documentation on package policies.
+//Warning: successful submission does not mean the transactions will propagate throughout the network.
+//
+//Arguments:
+//1. package          (json array, required) An array of raw transactions.
+//                    The package must solely consist of a child and its parents. None of the parents may depend on each other.
+//                    The package must be topologically sorted, with the child being the last element in the array.
+//     [
+//       "rawtx",     (string)
+//       ...
+//     ]
+//2. maxfeerate       (numeric or string, optional, default="0.10") Reject transactions whose fee rate is higher than the specified value, expressed in BTC/kvB.
+//                    Fee rates larger than 1BTC/kvB are rejected.
+//                    Set to 0 to accept any fee rate.
+//3. maxburnamount    (numeric or string, optional, default="0.00") Reject transactions with provably unspendable outputs (e.g. 'datacarrier' outputs that use the OP_RETURN opcode) greater than the specified value, expressed in BTC.
+//                    If burning funds through unspendable outputs is desired, increase this value.
+//                    This check is based on heuristics and does not guarantee spendability of outputs.
+//
+//
+//Result:
+//{                                   (json object)
+//  "package_msg" : "str",            (string) The transaction package result message. "success" indicates all transactions were accepted into or are already in the mempool.
+//  "tx-results" : {                  (json object) transaction results keyed by wtxid
+//    "wtxid" : {                     (json object) transaction wtxid
+//      "txid" : "hex",               (string) The transaction hash in hex
+//      "other-wtxid" : "hex",        (string, optional) The wtxid of a different transaction with the same txid but different witness found in the mempool. This means the submitted transaction was ignored.
+//      "vsize" : n,                  (numeric, optional) Sigops-adjusted virtual transaction size.
+//      "fees" : {                    (json object, optional) Transaction fees
+//        "base" : n,                 (numeric) transaction fee in BTC
+//        "effective-feerate" : n,    (numeric, optional) if the transaction was not already in the mempool, the effective feerate in BTC per KvB. For example, the package feerate and/or feerate with modified fees from prioritisetransaction.
+//        "effective-includes" : [    (json array, optional) if effective-feerate is provided, the wtxids of the transactions whose fees and vsizes are included in effective-feerate.
+//          "hex",                    (string) transaction wtxid in hex
+//          ...
+//        ]
+//      },
+//      "error" : "str"               (string, optional) The transaction error string, if it was rejected by the mempool
+//    },
+//    ...
+//  },
+//  "replaced-transactions" : [       (json array, optional) List of txids of replaced transactions
+//    "hex",                          (string) The transaction id
+//    ...
+//  ]
+//}
+//
+//Examples:
+//> curl --user myusername --data-binary '{"jsonrpc": "2.0", "id": "curltest", "method": "submitpackage", "params": [["rawtx1", "rawtx2"]]}' -H 'content-type: application/json' http://127.0.0.1:8332/
+//> bitcoin-cli submitpackage '["rawtx1", "rawtx2"]'
+#[derive(Clone, Debug, PartialEq, Deserialize, Serialize)]
+pub struct SubmitPackage {
+    /// The transaction package result message. "success" indicates all transactions were accepted into or are already in the mempool.
+    pub package_msg: String,
+    /// Transaction results keyed by [`Wtxid`].
+    #[serde(rename = "tx-results")]
+    pub tx_results: HashMap<Wtxid, SubmitPackageTxResult>,
+    /// List of txids of replaced transactions.
+    #[serde(rename = "replaced-transactions")]
+    pub replaced_transactions: Vec<Txid>,
+}
+
+/// Models the per-transaction result included in the JSON-RPC method `submitpackage`.
+#[derive(Clone, Debug, PartialEq, Deserialize, Serialize)]
+pub struct SubmitPackageTxResult {
+    /// The transaction id.
+    pub txid: Txid,
+    /// The [`Wtxid`] of a different transaction with the same [`Txid`] but different witness found in the mempool.
+    ///
+    /// If set, this means the submitted transaction was ignored.
+    #[serde(rename = "other-wtxid")]
+    pub other_wtxid: Option<Wtxid>,
+    /// Sigops-adjusted virtual transaction size.
+    pub vsize: Option<usize>,
+    /// Transaction fees.
+    pub fees: Option<SubmitPackageTxResultFees>,
+    /// The transaction error string, if it was rejected by the mempool
+    pub error: Option<String>,
+}
+
+/// Models the fees included in the per-transaction result of the JSON-RPC method `submitpackage`.
+#[derive(Clone, Debug, PartialEq, Deserialize, Serialize)]
+pub struct SubmitPackageTxResultFees {
+    /// Transaction fee.
+    #[serde(rename = "base")]
+    pub base_fee: Amount,
+    /// The effective feerate.
+    ///
+    /// Will be `None` if the transaction was already in the mempool.
+    ///
+    /// For example, the package feerate and/or feerate with modified fees from the `prioritisetransaction` JSON-RPC method.
+    #[serde(rename = "effective-feerate")]
+    pub effective_feerate: Option<FeeRate>,
+    /// If [`Self::effective_feerate`] is provided, this holds the [`Wtxid`]s of the transactions
+    /// whose fees and vsizes are included in effective-feerate.
+    #[serde(rename = "effective-includes")]
+    pub effective_includes: Vec<Wtxid>,
+}