Just as well, then, that the fiscal policy is expected to loosen this year.

【翻译】那么，幸好今年的财政政策有望放宽。

just as well 是个习语，意为“正好如此；幸好如此”。经常作表语，以下两个句型为： It 是形式主语，不定式和that 从句是真实主语。

1. It is just well to do sth.

2. It is just well that ....

例如：

1. Judging from everything you've said, it was just as well （that）she wasn't there.  

从你所说的这一切来看，幸好她不在那儿。

来自柯林斯例句

2. It is just as well that we didn't go out in this rain.  

我们下雨天没出去倒也是好事。

来自《简明英汉词典》

3. It's just as well that I wasn't invited. I couldn't have gone anyway. 

正好我未被邀请，反正我也去不了。

网友例句的这种省略It is ，没有什么规律可循。一般用于口语或非正式英语中，又如:

No wonder that... = It is no wonder that...   难怪......

No doubt that... = It is no doubt that...  毫无疑问......