decimal

System.Decimal
Exact Precision Floating Point (1 E -28 to 7.9 E 28)
29 significant digits.
The default value is 0.

decimal myDecimal; 
System.Decimal myDecimal; 

Explicit Data Type

You can append literal constants with the letter "M" or "m" when you need to specify this type of literal.

decimal myDecimal = 1.6m;                         'suffix is necessary  
decimal myDecimal = 1.6M;                         'suffix is necessary  

Converting

// Decimal to Integer 
decimal myDecimal = 1.6M; 
int myInteger = (int)myDecimal; 

// Decimal to Double 
decimal myDecimal = 1.6M; 
double myDouble = (double)myDecimal; 

// Decimal to Float 
decimal myDecimal = 1.6M; 
float myFloat = (float)myDecimal; 

Examples

System.Diagnostics.Debug.Print myDecimal           '= 1.2345  

decimal.Round()

Rounds a value to the nearest integer or to the specified number of fractional digits
This uses Bankers Rounding

VBA Currency Equivalent

The Currency data type in VBA has been replaced with the Decimal data type in C#.
In most cases these will be interchangeable however they do actually differ in their precision.
The Decimal data type in .NET is more accurate than the VBA Currency data type.