Need help in DAX

Hey there! 

So if I understood, you want a DAX measure that calculates Win of Benchmark + Organic of Benchmark - Organic of Survey, while ensuring it works with the Survey Period and Benchmark Period slicers. 

Maybe try thisone: 

Win_Organic_Calculation =
VAR SurveyYear = SELECTEDVALUE(SurveyTable[Year]) -- Get selected Survey Year
VAR BenchmarkYear = SurveyYear - 1 -- Benchmark Year is Survey Year - 1

-- Win of Benchmark: Contracts created in Benchmark Year
VAR Win_Benchmark =
CALCULATE(
COUNTROWS(ContractsTable),
ContractsTable[CreationYear] = BenchmarkYear
)

-- Organic of Benchmark: Contracts active in Benchmark Year that were renewed from two years ago
VAR Organic_Benchmark =
CALCULATE(
COUNTROWS(ContractsTable),
ContractsTable[StartYear] = BenchmarkYear - 1,
ContractsTable[RenewalYear] = BenchmarkYear
)

-- Organic of Survey: Contracts active in Survey Year that were renewed from Benchmark Year
VAR Organic_Survey =
CALCULATE(
COUNTROWS(ContractsTable),
ContractsTable[StartYear] = BenchmarkYear,
ContractsTable[RenewalYear] = SurveyYear
)

-- Final Calculation
RETURN Win_Benchmark + Organic_Benchmark - Organic_Survey

This will hopefully do everything you want. 

Cheerio,

Z😁😁