Specify Decimal Column Type to Avoid Silent Truncation of Long Values

You can override the OnModelCreating method of the DbContext

protected override void OnModelCreating(ModelBuilder builder)
{
  base.OnModelCreating(builder);
  builder.Entity<Product>()
      .Property(d => d.Price)
      .HasPrecision(18, 2);
}

Or you can simply annotate the property with the [Precision(18, 2)] attribute and achieve the same result.