diff --git a/source/Gnomeshade.WebApi/Logging/LoggerExtensions.cs b/source/Gnomeshade.WebApi/Logging/LoggerExtensions.cs
new file mode 100644
index 00000000..a6e06e65
--- /dev/null
+++ b/source/Gnomeshade.WebApi/Logging/LoggerExtensions.cs
@@ -0,0 +1,35 @@
+// Copyright 2021 Valters Melnalksnis
+// Licensed under the GNU Affero General Public License v3.0 or later.
+// See LICENSE.txt file in the project root for full license information.
+
+using System.Text.Json;
+
+using Microsoft.Extensions.Logging;
+
+using VMelnalksnis.NordigenDotNet.Accounts;
+
+using static Microsoft.Extensions.Logging.LogLevel;
+
+namespace Gnomeshade.WebApi.Logging;
+
+/// <summary>Helper methods for logging.</summary>
+internal static partial class LoggerExtensions
+{
+	[LoggerMessage(1, Debug, "Getting requisition for {InstitutionId}")]
+	internal static partial void GettingRequisition(this ILogger logger, string institutionId);
+
+	[LoggerMessage(2, Debug, "Creating new requisition for {InstitutionId}")]
+	internal static partial void CreatingRequisition(this ILogger logger, string institutionId);
+
+	[LoggerMessage(3, Debug, "Matched report account to {AccountName}")]
+	internal static partial void MatchedReportAccount(this ILogger logger, string accountName);
+
+	[LoggerMessage(4, Trace, "Parsing transaction {ServicerReference}; {BookedTransaction}")]
+	internal static partial void ParsingTransaction(this ILogger logger, string servicerReference, string bookedTransaction);
+
+	internal static void ParsingTransaction(this ILogger logger, BookedTransaction transaction)
+	{
+		var json = JsonSerializer.Serialize(transaction, LoggingSerializerContext.Default.BookedTransaction);
+		logger.ParsingTransaction(transaction.TransactionId, json);
+	}
+}
diff --git a/source/Gnomeshade.WebApi/Logging/LoggingSerializerContext.cs b/source/Gnomeshade.WebApi/Logging/LoggingSerializerContext.cs
new file mode 100644
index 00000000..85f3b5f2
--- /dev/null
+++ b/source/Gnomeshade.WebApi/Logging/LoggingSerializerContext.cs
@@ -0,0 +1,14 @@
+// Copyright 2021 Valters Melnalksnis
+// Licensed under the GNU Affero General Public License v3.0 or later.
+// See LICENSE.txt file in the project root for full license information.
+
+using System.Text.Json.Serialization;
+
+using VMelnalksnis.NordigenDotNet.Accounts;
+
+namespace Gnomeshade.WebApi.Logging;
+
+/// <inheritdoc cref="JsonSerializerContext" />
+[JsonSourceGenerationOptions(IgnoreReadOnlyProperties = true)]
+[JsonSerializable(typeof(BookedTransaction))]
+internal sealed partial class LoggingSerializerContext : JsonSerializerContext;
diff --git a/source/Gnomeshade.WebApi/V1/Controllers/NordigenController.cs b/source/Gnomeshade.WebApi/V1/Controllers/NordigenController.cs
index 1d8960ef..06db7efa 100644
--- a/source/Gnomeshade.WebApi/V1/Controllers/NordigenController.cs
+++ b/source/Gnomeshade.WebApi/V1/Controllers/NordigenController.cs
@@ -18,6 +18,7 @@
 using Gnomeshade.Data.Entities;
 using Gnomeshade.Data.Repositories;
 using Gnomeshade.WebApi.Client;
+using Gnomeshade.WebApi.Logging;
 using Gnomeshade.WebApi.Models.Importing;
 using Gnomeshade.WebApi.V1.Authentication;
 using Gnomeshade.WebApi.V1.Importing;
@@ -109,7 +110,7 @@ public async Task<ActionResult> Import(string id, [Required] string timeZone)
 			return BadRequest(ModelState);
 		}
 
-		_logger.LogDebug("Getting requisition for {InstitutionId}", id);
+		_logger.GettingRequisition(id);
 		var existing = await _nordigenClient
 			.Requisitions
 			.Get()
@@ -120,7 +121,7 @@ public async Task<ActionResult> Import(string id, [Required] string timeZone)
 
 		if (existing is null)
 		{
-			_logger.LogDebug("Creating new requisition for {InstitutionId}", id);
+			_logger.CreatingRequisition(id);
 			var requisition = await _nordigenClient.Requisitions.Post(new(new("https://gnomeshade.org/"), id));
 			return Redirect(requisition.Link.AbsoluteUri);
 		}
@@ -143,7 +144,7 @@ public async Task<ActionResult> Import(string id, [Required] string timeZone)
 			var (reportAccount, currency, createdAccount) = await _importService
 				.FindUserAccountAsync(new(account.Iban, details.Currency), user, dbTransaction);
 
-			_logger.LogDebug("Matched report account to {AccountName}", reportAccount.Name);
+			_logger.MatchedReportAccount(reportAccount.Name);
 
 			var resultBuilder = new AccountReportResultBuilder(_mapper, reportAccount, createdAccount);
 
@@ -254,7 +255,7 @@ private static (string? Domain, string? Family, string? SubFamily) GetCode(strin
 		UserEntity user,
 		DateTimeZone dateTimeZone)
 	{
-		_logger.LogTrace("Parsing transaction {ServicerReference}", bookedTransaction.TransactionId);
+		_logger.ParsingTransaction(bookedTransaction);
 
 		var amount = Math.Abs(bookedTransaction.TransactionAmount.Amount);
 		var (domainCode, familyCode, subFamilyCode) = GetCode(bookedTransaction.BankTransactionCode);