diff --git a/src/JoinRpg.DataModel/Claim.cs b/src/JoinRpg.DataModel/Claim.cs
index 0489a49cf..81d78caa2 100644
--- a/src/JoinRpg.DataModel/Claim.cs
+++ b/src/JoinRpg.DataModel/Claim.cs
@@ -1,3 +1,4 @@
+using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
 using JoinRpg.DataModel.Finances;
 using JoinRpg.Helpers;
@@ -7,7 +8,7 @@
 namespace JoinRpg.DataModel;
 
 // ReSharper disable once ClassWithVirtualMembersNeverInherited.Global used by LINQ
-public class Claim : IProjectEntity, ILinkable, IFieldContainter
+public class Claim : IProjectEntity, ILinkable, IFieldContainter, IValidatableObject
 {
     public int ClaimId { get; set; }
     public int CharacterId { get; set; }
@@ -81,11 +82,32 @@ public class Claim : IProjectEntity, ILinkable, IFieldContainter
 
     #region Finance
 
+    /// <summary>
+    /// The date when necessary amout to stop increasing of the total price has been paid.
+    /// </summary>
+    public DateTime? FixedPaymentDate { get; set; }
+
+    /// <summary>
+    /// Discounted price to be paid for this claim.
+    /// When set, total price will not be automatically recalculated depending on the current date.
+    /// Mutually exclusive with <see cref="DiscountPercent"/>.
+    /// </summary>
+    [Range(0, int.MaxValue)]
+    public int? DiscountedPrice { get; set; }
+
+    /// <summary>
+    /// Discount percent for this claim. Do not affect the total price recalculation depending on the current date.
+    /// Mutually exclusive with <see cref="DiscountedPrice"/>.
+    /// </summary>
+    [Range(0, 100)]
+    public int? DiscountPercent { get; set; }
+
     /// <summary>
     /// Fee to pay by player, manually set by master.
     /// If null (default), actual fee will be automatically selected
     /// from the project's list of payments.
     /// </summary>
+    [Obsolete("Use the DiscountedPrice or DiscountPercent instead")]
     public int? CurrentFee { get; set; }
 
     /// <summary>
@@ -104,6 +126,7 @@ public IEnumerable<FinanceOperation> ApprovedFinanceOperations
     /// </summary>
     public virtual ICollection<RecurrentPayment> RecurrentPayments { get; set; }
 
+    [Obsolete("Set the discount directly")]
     public bool PreferentialFeeUser { get; set; }
 
     /// <summary>
@@ -139,4 +162,14 @@ public IEnumerable<FinanceOperation> ApprovedFinanceOperations
 
     #endregion
 
+    /// <inheritdoc />
+    public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
+    {
+        if (DiscountedPrice.HasValue && DiscountPercent.HasValue)
+        {
+            yield return new ValidationResult(
+                "Only one type of discount could be set",
+                [nameof(DiscountedPrice), nameof(DiscountPercent)]);
+        }
+    }
 }
diff --git a/src/JoinRpg.DataModel/Finances/PriceValue.cs b/src/JoinRpg.DataModel/Finances/PriceValue.cs
new file mode 100644
index 000000000..1bfd461be
--- /dev/null
+++ b/src/JoinRpg.DataModel/Finances/PriceValue.cs
@@ -0,0 +1,33 @@
+using System.ComponentModel.DataAnnotations;
+using JoinRpg.PrimitiveTypes.ProjectMetadata;
+
+namespace JoinRpg.DataModel.Finances;
+
+public class PriceValue
+{
+    /// <summary>
+    /// Database Id of a project.
+    /// </summary>
+    public int ProjectId { get; set; }
+
+    /// <summary>
+    /// Database Id of a date-time column.
+    /// </summary>
+    public int ProjectFeeSettingId { get; set; }
+
+    /// <summary>
+    /// Database Id of a field.
+    /// </summary>
+    public int FieldId { get; set; }
+
+    /// <summary>
+    /// Database Id of a field value (only for <see cref="ProjectFieldType.Dropdown"/> and <see cref="ProjectFieldType.MultiSelect"/>).
+    /// </summary>
+    public int? FieldValueId { get; set; }
+
+    /// <summary>
+    /// Price value (only positive values are allowed).
+    /// </summary>
+    [Range(0, int.MaxValue, ErrorMessage = "Fee should be positive.")]
+    public int Price { get; set; }
+}
diff --git a/src/JoinRpg.DataModel/Finances/ProjectFeeSetting.cs b/src/JoinRpg.DataModel/Finances/ProjectFeeSetting.cs
index 804e6d43e..422ca074f 100644
--- a/src/JoinRpg.DataModel/Finances/ProjectFeeSetting.cs
+++ b/src/JoinRpg.DataModel/Finances/ProjectFeeSetting.cs
@@ -5,11 +5,18 @@ namespace JoinRpg.DataModel;
 public class ProjectFeeSetting
 {
     public int ProjectFeeSettingId { get; set; }
+
     public int ProjectId { get; set; }
+
     public virtual Project Project { get; set; }
+
+    [Obsolete("Date-dependent prices are now configured using PriveValue")]
     [Range(0, int.MaxValue, ErrorMessage = "Fee should be positive.")]
     public int Fee { get; set; }
+
+    [Obsolete("Date-dependent prices are now configured using PriveValue")]
     [Range(0, int.MaxValue, ErrorMessage = "Fee should be positive.")]
     public int? PreferentialFee { get; set; }
+
     public DateTime StartDate { get; set; }
 }
diff --git a/src/JoinRpg.DataModel/Finances/ReceiptItemType.cs b/src/JoinRpg.DataModel/Finances/ReceiptItemType.cs
new file mode 100644
index 000000000..f87dfe822
--- /dev/null
+++ b/src/JoinRpg.DataModel/Finances/ReceiptItemType.cs
@@ -0,0 +1,22 @@
+namespace JoinRpg.DataModel.Finances;
+
+/// <summary>
+/// Describes how a field with price should be treated when issuing a receipt.
+/// </summary>
+public enum ReceiptItemType
+{
+    /// <summary>
+    /// Field should not have its own receipt position.
+    /// </summary>
+    IncludeIntoPrimary,
+
+    /// <summary>
+    /// Field represents a certain commodity.
+    /// </summary>
+    Commodity,
+
+    /// <summary>
+    /// Field represents a certain service.
+    /// </summary>
+    Service,
+}
diff --git a/src/JoinRpg.DataModel/ProjectField.cs b/src/JoinRpg.DataModel/ProjectField.cs
index ad0fdca06..1f0135943 100644
--- a/src/JoinRpg.DataModel/ProjectField.cs
+++ b/src/JoinRpg.DataModel/ProjectField.cs
@@ -1,5 +1,6 @@
 using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
+using JoinRpg.DataModel.Finances;
 using JoinRpg.Helpers;
 using JoinRpg.PrimitiveTypes.ProjectMetadata;
 
@@ -44,16 +45,56 @@ public class ProjectField : IProjectEntity, IDeletableSubEntity, IValidatableObj
     public bool ShowOnUnApprovedClaims { get; set; }
 
     /// <summary>
-    /// Price associated with current field.
-    /// Will be used in payment calculations.
-    /// Value usage differs on FieldType. Value will be:
-    /// - Number: multiplied with entered number
-    /// - CheckBox: used if checkbox was checked
-    /// - Dropdown, Multiselect: ignored, see values for prices
-    /// - String, Text, Header: ignored
+    /// When true, this field may have assigned prices.
     /// </summary>
+    /// <remarks>
+    /// Has effect only when field has certain <see cref="FieldType"/>:
+    /// <ul>
+    /// <li><see cref="ProjectFieldType.Checkbox"/></li>
+    /// <li><see cref="ProjectFieldType.Number"/></li>
+    /// <li><see cref="ProjectFieldType.Dropdown"/></li>
+    /// <li><see cref="ProjectFieldType.MultiSelect" /></li>
+    /// </ul>
+    /// </remarks>
+    public bool Payable { get; set; }
+
+    /// <summary>
+    /// Base price associated with this field.
+    /// </summary>
+    /// <remarks>
+    /// Actual price depends on current date via <see cref="PriceValue"/> objects.
+    /// </remarks>
     public int Price { get; set; }
 
+    /// <summary>
+    /// Defines how this field should be interpreted when preparing a receipt.
+    /// </summary>
+    public ReceiptItemType ReceiptItemType { get; set; }
+
+    /// <summary>
+    /// The name used to display in receipt. When not specified, the <see cref="FieldName"/> is used.
+    /// </summary>
+    /// <remarks>
+    /// When <see cref="FieldType"/> is <see cref="ProjectFieldType.Dropdown"/> or <see cref="ProjectFieldType.MultiSelect"/>
+    /// this value has to be specified independently in each <see cref="ProjectFieldDropdownValue"/>.
+    /// </remarks>
+    [StringLength(64)]
+    public string? ReceiptName { get; set; }
+
+    /// <summary>
+    /// When true, a discount can be applied to price of this field.
+    /// </summary>
+    /// <remarks>
+    /// Whereas the relative discount set in <see cref="Claim.DiscountPercent"/> will only affect the total sum while calculation,
+    /// the <see cref="Claim.DiscountedPrice"/> will exclude discountable field from total calculation.
+    /// </remarks>
+    public bool Discountable { get; set; }
+
+    /// <summary>
+    /// Collection of related price values.
+    /// </summary>
+    public ICollection<PriceValue>? PriceValues { get; set; }
+
     bool IDeletableSubEntity.CanBePermanentlyDeleted => !WasEverUsed;
 
     public virtual ICollection<ProjectFieldDropdownValue> DropdownValues { get; set; } =
diff --git a/src/JoinRpg.DataModel/ProjectFieldDropdownValue.cs b/src/JoinRpg.DataModel/ProjectFieldDropdownValue.cs
index c35266fe0..c2c4096e5 100644
--- a/src/JoinRpg.DataModel/ProjectFieldDropdownValue.cs
+++ b/src/JoinRpg.DataModel/ProjectFieldDropdownValue.cs
@@ -1,4 +1,5 @@
 using System.ComponentModel.DataAnnotations;
+using JoinRpg.DataModel.Finances;
 using JoinRpg.Helpers;
 
 namespace JoinRpg.DataModel;
@@ -32,17 +33,35 @@ public class ProjectFieldDropdownValue : IDeletableSubEntity, IProjectEntity, IV
 
     public MarkdownString MasterDescription { get; set; }
 
+    #region Finance
+
     /// <summary>
-    /// Price associated with this value.
+    /// Base price associated with this field value.
     /// </summary>
+    /// <remarks>
+    /// Actual price depends on current date via <see cref="PriceValue"/> objects.
+    /// </remarks>
     public int Price { get; set; }
 
+    /// <summary>
+    /// The name used to display in receipt.
+    /// When not specified, the <see cref="Label"/> property value will be taken but truncated to 64 characters.
+    /// </summary>
+    [StringLength(64)]
+    public string? ReceiptName { get; set; }
+
+    /// <summary>
+    /// Collection of related price values.
+    /// </summary>
+    public ICollection<PriceValue>? PriceValues { get; set; }
+
+    #endregion
+
     /// <summary>
     /// External value for external IT systems
     /// </summary>
     public string? ProgrammaticValue { get; set; }
 
-
     public virtual CharacterGroup? CharacterGroup { get; set; }
 
     public virtual int? CharacterGroupId { get; set; }
diff --git a/src/JoinRpg.DataModel/Projects/Project.cs b/src/JoinRpg.DataModel/Projects/Project.cs
index 7478ae1a3..76742ac15 100644
--- a/src/JoinRpg.DataModel/Projects/Project.cs
+++ b/src/JoinRpg.DataModel/Projects/Project.cs
@@ -30,17 +30,24 @@ public class Project : IProjectEntity
 
     public virtual ICollection<Claim> Claims { get; set; }
 
-    public virtual ICollection<FinanceOperation> FinanceOperations { get; set; }
-
     public virtual ProjectDetails Details { get; set; }
 
     public virtual ICollection<PlotFolder> PlotFolders { get; set; }
 
     Project IProjectEntity.Project => this;
 
+    #region Finance
+
     public virtual ICollection<ProjectFeeSetting> ProjectFeeSettings { get; set; }
+
     public virtual ICollection<PaymentType> PaymentTypes { get; set; }
 
+    public virtual ICollection<MoneyTransfer> MoneyTransfers { get; set; }
+
+    public virtual ICollection<FinanceOperation> FinanceOperations { get; set; }
+
+    #endregion
+
     public DateTime CharacterTreeModifiedAt { get; set; }
 
     #region helper properties
@@ -53,7 +60,5 @@ public class Project : IProjectEntity
 
     public virtual ICollection<GameReport2DTemplate> GameReport2DTemplates { get; set; }
 
-    public virtual ICollection<MoneyTransfer> MoneyTransfers { get; set; }
-
     public virtual HashSet<KogdaIgraGame> KogdaIgraGames { get; set; } = null!;
 }
diff --git a/src/JoinRpg.DataModel/Projects/ProjectDetails.cs b/src/JoinRpg.DataModel/Projects/ProjectDetails.cs
index 3669ea4c7..b50b1d45a 100644
--- a/src/JoinRpg.DataModel/Projects/ProjectDetails.cs
+++ b/src/JoinRpg.DataModel/Projects/ProjectDetails.cs
@@ -1,5 +1,6 @@
 using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
+using JoinRpg.DataModel.Finances;
 using JoinRpg.PrimitiveTypes.ProjectMetadata;
 
 namespace JoinRpg.DataModel;
@@ -13,10 +14,61 @@ public class ProjectDetails : IValidatableObject
     public bool EnableManyCharacters { get; set; }
     public bool PublishPlot { get; set; }
 
+    #region Finance
+
     public bool FinanceWarnOnOverPayment { get; set; } = true;
+
+    /// <summary>
+    /// The minimal required payment to be made to stop increasing the total price depending on date.
+    /// </summary>
+    /// <remarks>
+    /// This property is not mutually exclusive with <see cref="MinPaidPercentToFixPrice"/>.
+    /// When both defined, price will be fixed when the first condition has met.
+    /// </remarks>
+    [Range(0, int.MaxValue)]
+    public int? MinPaymentToFixPrice { get; set; }
+
+    /// <summary>
+    /// The minimal required payment in percent from total to be made to stop increasing the total price depending on date.
+    /// </summary>
+    /// <remarks>
+    /// This property is not mutually exclusive with <see cref="MinPaymentToFixPrice"/>.
+    /// When both defined, price will be fixed when the first condition has met.
+    /// </remarks>
+    [Range(0, 100)]
+    public int? MinPaidPercentToFixPrice { get; set; }
+
+    /// <summary>
+    /// When true, a discount could be set for a claim payment.
+    /// </summary>
+    public bool EnableDiscounts { get; set; }
+
+    /// <summary>
+    /// Describes the conditions a user should meet to get a discount.
+    /// </summary>
+    public MarkdownString DiscountConditions { get; set; } = new();
+
+    /// <summary>
+    /// Defines how the primary position in receipt should be identified.
+    /// </summary>
+    /// <remarks>The <see cref="ReceiptItemType.IncludeIntoPrimary"/> is not allowed here.</remarks>
+    public ReceiptItemType PrimaryPaymentReceiptItemType { get; set; } = ReceiptItemType.Service;
+
+    /// <summary>
+    /// The named used to display in receipt.
+    /// When not specified, it will be automatically combined from the project's name and the word "Билет".
+    /// </summary>
+    [StringLength(64)]
+    public string? PrimaryPaymentReceiptName { get; set; }
+
+    [Obsolete("Use the Discountable instead")]
     public bool PreferentialFeeEnabled { get; set; } = false;
+
+    [Obsolete("Use the DiscountConditions instead")]
     public MarkdownString PreferentialFeeConditions { get; set; } = new MarkdownString();
 
+    #endregion
+
     public bool EnableCheckInModule { get; set; } = false;
     public bool CheckInProgress { get; set; } = false;
     public bool AllowSecondRoles { get; set; } = false;