XNPV Result is not 0 when I use the XIRR result as the rate

[neukarmel]

I have a stream of cash flows for a financial model that I am building (pasted below). I am trying to calculate the IRR of the Gross and Net lines. For the Gross line, I entered the following formula =XIRR(G19:AD19,G17:AD17,0.5) and I get the result of 47.16%. I then try to verify that XIRR result by doing entering the following formula =XNPV(AK19,G19:AD19,G17:AD17. AK19 is the cell where the XIRR result was calculated. The result of that XNPV formula is -0.09795349. I was expecting the result of the XNPV to be much closer to 0 than that. Does this mean that my IRR calculation is not correct. Can someone please verify this for me? I would be grateful. Thank you in advance for your help.

	Mar-18	Jun-18	Sep-18	Dec-18	Mar-19	Jun-19	Sep-19	Dec-19	Mar-20	Jun-20	Sep-20	Dec-20	Mar-21	Jun-21	Sep-21	Dec-21	Mar-22	Jun-22	Sep-22	Dec-22	Mar-23	Jun-23	Sep-23	Dec-23
Capital Calls		(2,000,000)	(2,000,000)	(2,000,000)	(2,000,000)	(2,000,000)	(2,000,000)	(2,000,000)	(2,000,000)	(2,000,000)	(2,000,000)	-	-	-	-	-	-	-	-	-	-	-	-	-
Gross	(0)	(2,000,000)	(1,599,770)	(2,000,000)	(2,000,000)	(2,000,000)	(2,000,000)	707,500	(2,000,000)	(2,000,000)	(2,000,000)	11,412,955	-	-	-	16,077,841	-	-	-	14,135,376	-	-	-	5,102,124
Net	(0)	(2,110,000)	(1,709,770)	(2,110,000)	(2,110,000)	(2,110,000)	(2,110,000)	597,500	(2,110,000)	(2,060,000)	(2,060,000)	11,352,955	(60,000)	(60,000)	(60,000)	14,840,227	(60,000)	(60,000)	(60,000)	13,248,252	(60,000)	(60,000)	(60,000)	3,731,748

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